| Name | Nation | Sport | Games | Notes |
|---|
| Saud Al-Zaabi | United Arab Emirates | Athletics | 2016 Summer | |
| Grâce Zaadi | France | Handball | 2016 Summer, 2020 Summer, 2024 Summer | |
| Herman Zaanen | Netherlands | Rowing | 1972 Summer | |
| Juan Carlos Zabala | Argentina | Athletics | 1932 Summer, 1936 Summer | |
| Ronald Zabala-Goetschel | Ecuador | Equestrian eventing | 2012 Summer, 2024 Summer | |
| Mariano Zabaleta | Argentina | Tennis | 2000 Summer, 2004 Summer | |
| Pablo Zabaleta | Football | 2008 Summer | |
| Santi Zabaleta | Spain | Basketball | 1968 Summer | |
| Miguel Zabalza | Fencing | 1924 Summer | |
| Sergey Zabavsky | Tajikistan | Athletics | 2000 Summer | |
| Andrzej Zabawa | Poland | Ice hockey | 1976 Winter, 1980 Winter, 1984 Winter | |
| Daria Zabawska | Athletics | 2024 Summer | |
| Krystyna Zabawska | 1992 Summer, 2000 Summer, 2004 Summer, 2008 Summer | |
| Erik Zabel | Germany | Road cycling | 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer | |
| Mark Zabel | Canoe sprint | 1996 Summer, 2000 Summer, 2004 Summer | |
| Wilhelm Zabel [ Wikidata ] | United States | Artistic gymnastics | 1904 Summer | |
| Aleksandr Zabelin | Soviet Union | Shooting | 1960 Summer, 1964 Summer | |
| Alexandra Zabelina | Fencing | 1960 Summer, 1968 Summer, 1972 Summer | |
| Olga Zabelinskaya | Russia, Uzbekistan | Road cycling | 2012 Summer, 2016 Summer, 2020 Summer, 2024 Summer | |
| Theresa Zabell | Spain | Sailing | 1992 Summer, 1996 Summer | |
| Milica Žabić | Serbia | Judo | 2024 Summer | |
| Fiodor Zabielin [ Wikidata ] | Russia | Artistic gymnastics | 1912 Summer | |
| Jerzy Zabielski | Poland | Fencing | 1924 Summer, 1928 Summer | |
| Natalia Zabiiako | Russian Olympic Committee | Figure skating | 2018 Winter | |
| Zulfiya Zabirova | Russia, Kazakhstan | Road cycling | 1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer | |
| Nina Spreitzer | Slovenia | Handball | 2024 Summer | |
| Jozef Žabka | Slovakia | Track cycling | 2004 Summer | |
| Farid Zablith Filho | Brazil | Swimming | 1960 Summer, 1964 Summer | |
| Marina Zablith | Water polo | 2016 Summer | |
| Courtney Zablocki | United States | Luge | 2002 Winter, 2006 Winter | |
| Wojciech Zabłocki | Poland | Fencing | 1952 Summer, 1956 Summer, 1960 Summer, 1964 Summer | |
| Irina Zabludina | Russia | Judo | 2012 Summer, 2016 Summer | |
| Natalya Zabolotnaya | Weightlifting | 2004 Summer, 2012 Summer | |
| Sergei Zabolotnov | Soviet Union | Swimming | 1988 Summer | |
| Filip Zaborowski | Poland | 2016 Summer | |
| Tomáš Záborský | Slovakia | Ice hockey | 2014 Winter | |
| Sándor Záborszky | Hungary | Swimming | 1956 Summer | |
| David Zabriskie | United States | Road cycling | 2008 Summer | |
| Stanislav Zabrodsky | Unified Team, Ukraine, Kazakhstan | Archery | 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer | |
| Oldřich Zábrodský | Czechoslovakia | Ice hockey | 1948 Winter | |
| Vladimír Zábrodský | 1948 Winter, 1956 Winter | |
| Valeriya Zabruskova | Russia | Athletics | 2004 Summer | |
| Eduard Zabuzhenko | Ukraine | 2020 Summer | |
| Jan Zabystřan | Czech Republic | Alpine skiing | 2018 Winter, 2022 Winter | |
| Laura Zacchilli | Italy | Rhythmic gymnastics | 2004 Summer | |
| Dušan Žáček | Czechoslovakia | Basketball | 1980 Summer | |
| Hans Zach | West Germany | Ice hockey | 1980 Winter | |
| Martin Zach | Germany | 1956 Winter | |
| Imre Zachár | Hungary | Swimming, Water polo | 1908 Summer, 1912 Summer | |
| Ján Zachara | Czechoslovakia | Boxing | 1952 Summer, 1956 Summer | |
| Christina Zachariadou | Greece | Tennis | 1992 Summer, 1996 Summer, 2004 Summer | |
| Georg Zacharias | Germany | Swimming | 1904 Summer | |
| Thomas Zacharias | West Germany | Athletics | 1968 Summer | |
| Willi Zacharias | Romania | Handball, Alpine skiing, Cross country skiing | 1936 Summer, 1936 Winter | |
| Allan Zachariasen | Denmark | Athletics | 1984 Summer | |
| Rolf Zachariassen | Finland | Sailing | 1960 Summer | |
| Georgios Zacharopoulos | Greece | Athletics | 1924 Summer, 1928 Summer | |
| Stefan Zachäus | Luxembourg | Triathlon | 2020 Summer | |
| Heidi Zacher | Germany | Freestyle skiing | 2010 Winter, 2014 Winter | |
| Joanna Zachoszcz | Poland | Marathon swimming | 2016 Summer | |
| Vasileia Zachou | Greece | Rhythmic gymnastics | 2012 Summer | |
| Renata Zachová | Czech Republic | Judo | 2024 Summer | |
| Michael Zachries | East Germany | Sailing | 1976 Summer, 1980 Summer | |
| Edgardo Zachrisson | Guatemala | Shooting | 1976 Summer | |
| Erik Zachrisson | Sweden | Speed skating | 2006 Winter | |
| Mario-Oscar Zachrisson | Guatemala | Shooting | 1980 Summer, 1984 Summer | |
| Mattias Zachrisson | Sweden | Handball | 2016 Summer | |
| Vendela Zachrisson-Santén | Sailing | 2004 Summer, 2008 Summer | |
| Nizar Zaćiragić | Bosnia and Herzegovina | Bobsleigh | 1994 Winter | |
| Sally Zack | United States | Road cycling | 1988 Summer, 1992 Summer | |
| Patrik Zackrisson | Sweden | Ice hockey | 2018 Winter | |
| Claudia Zaczkiewicz | West Germany | Athletics | 1988 Summer | |
| Teodor Zaczyk | Poland | Fencing | 1936 Summer, 1948 Summer | |
| Zahir Shah Al-Zadah | Afghanistan | Field hockey | 1936 Summer | |
| Abdelkader Zaddem | Tunisia | Athletics | 1972 Summer | |
| Sergei Zadelenov | Belarus | Ice hockey | 2010 Winter | |
| Mike Zadick | United States | Wrestling | 2008 Summer | |
| Ruben Zadkovich | Australia | Football | 2008 Summer | |
| Andrejus Zadneprovskis | Lithuania | Modern pentathlon | 1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer | |
| Vadim Zadoinov | Unified Team, Moldova | Athletics | 1992 Summer, 1996 Summer, 2000 Summer | |
| Yehuda Zadok | Israel | 1984 Summer | |
| Ervin Zádor | Hungary | Water polo | 1956 Summer | |
| Yelena Zadorozhnaya | Russia | Athletics | 2004 Summer, 2008 Summer | |
| Anna Zadorozhniuk | Ukraine | Figure skating | 2010 Winter | |
| Shelina Zadorsky | Canada | Football | 2016 Summer, 2020 Summer, 2024 Summer | |
| Hratch Zadourian | Lebanon | Road cycling | 1988 Summer | |
| Vatche Zadourian | 1992 Summer | |
| Pavel Zaduban | Slovakia | 1996 Summer | |
| Małgorzata Zadura | Poland | Athletics | 2008 Summer | |
| Amir Zafar | Pakistan | Field hockey | 1988 Summer | |
| Marianthi Zafeiriou | Greece | Rhythmic gymnastics | 2012 Summer | |
| Athanasios Zafeiropoulos | Wrestling | 1964 Summer | |
| Haydar Zafer | Turkey | 1952 Summer | |
| Katie Zaferes | United States | Triathlon | 2016 Summer, 2020 Summer | |
| Lorena Zaffalon | Italy | Artistic swimming | 2004 Summer | |
| Ivan Zafirov | Bulgaria | Football | 1968 Summer | |
| Erika Zafirova | Rhythmic gymnastics | 2020 Summer | |
| Neli Zafirova | Canoe sprint | 1996 Summer | |
| Mihai Zafiu | Romania | 1972 Summer, 1976 Summer, 1980 Summer | |
| Liliana Zagacka | Poland | Athletics | 2004 Summer | |
| Diana Zagainova | Lithuania | 2020 Summer, 2024 Summer | |
| Nicola Zagame | Australia | Water polo | 2012 Summer, 2016 Summer | |
| Ewa Zagata | Poland | Alpine skiing | 1992 Winter | |
| Edvīns Zāģeris | Soviet Union | Athletics | 1964 Summer | |
| Fayez Zaghloul | Syria | Boxing | 1980 Summer | |
| Mohamed Zaghloul | Egypt | Wrestling | 2016 Summer | |
| Mustapha El-Zaghrari | Morocco | Football | 1972 Summer | |
| Adelina Zagidullina | Russian Olympic Committee | Fencing | 2020 Summer | |
| Alina Zagitova | Figure skating | 2018 Winter | |
| Yousry Zagloul | Egypt | Judo | 1984 Summer | |
| Miklós Zágon | Hungary | Rowing | 1948 Summer, 1952 Summer | |
| Marlena Zagoni | Romania | 1976 Summer, 1980 Summer | |
| Józef Zagor | Poland | Equestrian dressage | 1980 Summer | |
| Ginka Zagorcheva | Bulgaria | Athletics | 1988 Summer | |
| Aleksey Zagornyi | Russia | 2000 Summer, 2012 Summer | |
| Oleg Zagorodnev | Soviet Union | Field hockey | 1980 Summer | |
| Aiga Zagorska | Lithuania | Road cycling, Track cycling | 1992 Summer | |
| Sergey Zagorsky | Russia | Equestrian jumping | 1912 Summer | |
| Igor Zagoruyko | Kazakhstan | Water polo | 2000 Summer, 2004 Summer | |
| Nik Zagranitchni | Israel | Wrestling | 1992 Summer | |
| Anne Zagré | Belgium | Athletics | 2012 Summer, 2016 Summer, 2020 Summer | |
| Paweł Zagrodnik | Poland | Judo | 2012 Summer | |
| Paweł Zagumny | Volleyball | 1996 Summer, 2004 Summer, 2008 Summer, 2012 Summer | |
| Mariel Zagunis | United States | Fencing | 2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer, 2020 Summer | |
| Robert Zagunis | Rowing | 1976 Summer | |
| Walter Zagurski | Weightlifting | 1932 Summer | |
| Aurel Zahan | Romania | Water polo | 1956 Summer, 1960 Summer, 1964 Summer | |
| Cristian Zaharia | Handball | 1992 Summer | |
| Ionelia Zaharia | Rowing | 2008 Summer | |
| Mariana Zaharia | 1980 Summer | |
| Babe Didrikson Zaharias | United States | Athletics | 1932 Summer | |
| Andrei Zaharov | Moldova | Swimming | 1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer | |
| Khojawahid Zahedi | Afghanistan | Wrestling | 1980 Summer | |
| Constantin Zahei | Romania | Equestrian eventing | 1936 Summer | |
| Ahmed Zaher | Egypt | Shooting | 2012 Summer, 2020 Summer | |
| Ibrahim Zaher | Water polo | 2004 Summer | |
| Carolle Zahi | France | Athletics | 2020 Summer | |
| Tahir Zahidov | Azerbaijan | Wrestling | 1996 Summer | |
| Amin Zahir | Great Britain | Fencing | 1992 Summer | |
| Hillar Zahkna | Estonia | Biathlon | 1992 Winter, 1994 Winter | |
| Rene Zahkna | 2018 Winter, 2022 Winter | |
| Egmont Zahn [ Wikidata ] | Germany | Rowing | 1900 Summer | |
| Nicole Zahnd | Switzerland | Swimming | 1996 Summer, 2004 Summer | |
| Lee Zahner | Australia | Beach volleyball | 1996 Summer, 2000 Summer | |
| Ján Záhončík | Czechoslovakia | Athletics | 1992 Summer | |
| Attila Záhonyi | Hungary | Shooting | 1988 Summer, 1992 Summer | |
| Sumaira Zahoor | Pakistan | Athletics | 2004 Summer | |
| Vyacheslav Zahorodnyuk | Unified Team, Ukraine | Figure skating | 1992 Winter, 1998 Winter | |
| Tiffany Zahorski | Russian Olympic Committee | 2018 Winter | |
| Jozef Záhorský | Czechoslovakia | Ice hockey | 1952 Winter | |
| Berta Zahourek | Austria | Swimming | 1912 Summer | |
| Krasimir Zahov | Bulgaria | 2000 Summer | |
| Mathias Zahradka | Austria | Weightlifting | 1936 Summer | |
| Abdelâali Zahraoui | Morocco | Football | 1972 Summer | |
| Klaus Zähringer | Germany, West Germany | Shooting | 1960 Summer, 1964 Summer, 1968 Summer | |
| Petra Zahrl | Austria | Swimming | 2000 Summer, 2004 Summer | |
| Petr Záhrobský | Czech Republic | Alpine skiing | 2002 Winter, 2006 Winter, 2010 Winter | |
| Din Zahur | Pakistan | Wrestling | 1956 Summer | |
| Abdel Aziz Zaibi | Tunisia | Handball | 1972 Summer | |
| Alexandr Zaichikov | Kazakhstan | Weightlifting | 2012 Summer, 2016 Summer | |
| Ali Zaid | Qatar | Football | 1984 Summer | |
| Ali Yusuf Zaid | Afghanistan | Athletics | 1960 Summer | |
| Ghanem Zaid | Kuwait | 1988 Summer, 1992 Summer | |
| Wahid Ullah Zaid | Afghanistan | Wrestling | 1964 Summer | |
| Ali Mabrouk El Zaidi | Libya | Athletics | 1996 Summer, 2004 Summer, 2008 Summer, 2012 Summer | |
| Pierre Zaïdin | France | 1924 Summer | |
| Wen Zaiding [ Wikidata ] | China | Sailing | 2024 Summer | |
| Sergey Zaikov | Kazakhstan | Athletics | 2012 Summer | |
| Mohamed Ragab El-Zaim | Egypt | Wrestling | 1948 Summer | |
| Georgios Zaimis | Greece | Sailing | 1960 Summer, 1964 Summer, 1968 Summer | |
| Azaari Mohamed Zain | Malaysia | Field hockey | 1976 Summer | |
| Zain Safar-ud-Din | Road cycling | 1964 Summer | |
| Khair-ud-Din bin Zainal | Field hockey | 1972 Summer, 1976 Summer | |
| Ariana Zairi [ Wikidata ] | Archery | 2024 Summer | |
| Jaouad Zairi | Morocco | Football | 2000 Summer | |
| Intigam Zairov | Azerbaijan | Weightlifting | 2008 Summer, 2012 Summer | |
| Lisa Zaiser | Austria | Swimming | 2012 Summer, 2016 Summer | |
| Alesia Zaitsava | Belarus | Badminton | 2012 Summer | |
| Alexander Zaitsev | Soviet Union | Figure skating | 1976 Winter, 1980 Winter | |
| Alexey Zaitsev | Russian Olympic Committee | Bobsleigh | 2018 Winter, 2022 Winter | |
| Ivan Zaitsev | Kazakhstan | Water polo | 2000 Summer, 2004 Summer | |
| Viktor Zaytsev | Unified Team | Athletics | 1992 Summer | |
| Yury Zaitsev | Soviet Union | Weightlifting | 1976 Summer | |
| Irina Zaitseva | Kazakhstan | Volleyball | 2008 Summer | |
| Olga Zaitseva | Russia | Biathlon | 2002 Winter, 2006 Winter, 2010 Winter, 2014 Winter | |
| Luminita Zaituc | Germany | Athletics | 2004 Summer | |
| Dimitri Zaitz | United States | 1936 Summer | |
| Czesław Zając | Poland | Shooting | 1960 Summer | |
| Joanna Zając | Snowboarding | 2014 Winter | |
| Karol Zając | Alpine skiing | 1936 Winter | |
| Mel Zajac | Canada | Swimming | 1976 Summer | |
| Thomas Zajac | Austria | Sailing | 2016 Summer, 2020 Summer | |
| Zbysław Zając | Poland | Track cycling | 1964 Summer | |
| Aleksander Zajączkowski | Wrestling | 1976 Summer | |
| Hanna Zajc | Sweden | Taekwondo | 2008 Summer | |
| Katarina Zajc | Yugoslavia | Alpine skiing | 1988 Winter | |
| Ludvik Zajc | Ski jumping | 1964 Winter, 1968 Winter | |
| Timi Zajc | Slovenia | 2018 Winter, 2022 Winter | |
| Ivan Zajec | Yugoslavia | Art competitions | 1924 Summer | |
| František Zajíček | Czechoslovakia | Bobsleigh | 1948 Winter | |
| Jaroslav Zajíček | Cross country skiing | 1948 Winter | |
| Lubomír Zajíček | Volleyball | 1968 Summer, 1972 Summer | |
| Antoni Zajkowski | Poland | Judo | 1972 Summer | |
| Miroslav Zajonc | United States | Luge | 1988 Winter | |
| Olda Žák | Czechoslovakia | Art competitions | 1932 Summer, 1936 Summer | |
| Koba Zakadze | Soviet Union | Ski jumping | 1956 Winter, 1960 Winter, 1964 Winter, 1972 Winter | |
| Maryan Zakalnytskyy | Ukraine | Athletics | 2020 Summer | |
| Polina Zakaluzny | Israel | Rhythmic gymnastics | 2012 Summer | |
| Aziz Zakari | Ghana | Athletics | 1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer | |
| Abdelhak Zakaria | Bahrain | 2004 Summer, 2008 Summer | |
| Lucas Zakaria [ Wikidata ] | Indonesia | Fencing | 1992 Summer | |
| József Zakariás | Hungary | Football | 1952 Summer | |
| Mária Zakariás | Canoe sprint | 1980 Summer | |
| Ilnur Zakarin | Russian Olympic Committee | Road cycling | 2020 Summer | |
| Roman Zakharov | Soviet Union | Rowing | 1952 Summer | |
| Vardan Zakaryan | Germany | Boxing | 2000 Summer | |
| Khwaja Zakauddin | Pakistan | Field hockey | 1964 Summer | |
| Muhammad Zakaullah | Sailing | 1984 Summer | |
| Tanja Žakelj | Slovenia | Cycling mountain bike | 2012 Summer, 2016 Summer, 2020 Summer, 2024 Summer | |
| Oksana Zakharchuk | Ukraine | Athletics | 2004 Summer | |
| Sergey Zakharenko | Belarus | Nordic combined | 1994 Winter, 1998 Winter, 2002 Winter | |
| Inessa Zakhareuskaya | Rowing | 2000 Summer | |
| Valery Zakharevich | Unified Team, Russia | Fencing | 1992 Summer, 1996 Summer | |
| Yury Zakharevich | Soviet Union | Weightlifting | 1988 Summer | |
| Dimitrios Zakharias | Greece | Wrestling | 1936 Summer | |
| Kolyo Zakhariev | Bulgaria | Shooting | 1996 Summer | |
| Roman Zakharkiv | Ukraine | Luge | 2010 Winter, 2014 Winter, 2018 Winter | |
| Nikolaos Zakharopoulos | Greece | Swimming | 1960 Summer | |
| Spilios Zakharopoulos | Athletics | 1972 Summer, 1976 Summer | |
| Aleksandr Zakharov | Soviet Union | Water polo | 1976 Summer | |
| Anton Zakharov | Ukraine | Diving | 2004 Summer, 2008 Summer, 2012 Summer | |
| Artyom Zakharov | Kazakhstan | Track cycling | 2016 Summer, 2020 Summer | |
| Eduard Zakharov | Russia | Boxing | 1996 Summer | |
| Ilya Zakharov | Diving | 2012 Summer, 2016 Summer | |
| Iurii Zakharov | Kyrgyzstan | Swimming | 2004 Summer, 2008 Summer | |
| Konstantin Zakharov | Belarus | Ice hockey | 2010 Winter | |
| Leonid Zakharov | Soviet Union | Rowing | 1956 Summer | |
| Nikita Zakharov | Russia | Bobsleigh | 2014 Winter | |
| Ruslan Zakharov | Russia, Russian Olympic Committee | Short track speed skating, Speed skating | 2010 Winter, 2014 Winter, 2022 Winter | |
| Vitaly Zakharov | Belarus | Fencing | 1996 Summer, 2000 Summer | |
| Yury Zakharov | Soviet Union | Athletics | 1960 Summer | |
| Halyna Zakharova | Handball | 1976 Summer | |
| Larisa Zakharova | Swimming | 1968 Summer | |
| Nadezhda Zakharova | Basketball | 1976 Summer | |
| Stella Zakharova | Artistic gymnastics | 1980 Summer | |
| Svetlana Zakharova | Russia | Athletics | 2004 Summer, 2008 Summer | |
| Tetiana Zakharova-Nadyrova | Soviet Union | Basketball | 1976 Summer, 1980 Summer | |
| Damir Zakhartdinov | Uzbekistan | Wrestling | 1996 Summer, 2000 Summer, 2004 Summer | |
| Oleksandr Zakharuk | Ukraine | 2000 Summer, 2004 Summer | |
| Ghofran Zaki | Egypt | Taekwondo | 2016 Summer | |
| Mohamed Selim Zaki | Egypt, United Arab Republic | Equestrian jumping | 1952 Summer, 1956 Summer, 1960 Summer | |
| Yakan Hussein | United Arab Republic, Egypt | Football | 1960 Summer, 1964 Summer | |
| Amir Zakirov | Kazakhstan | Breaking | 2024 Summer | |
| Marat Zakirov | Russia | Water polo | 2000 Summer, 2004 Summer | |
| Zakithi Nene | South Africa | Athletics | 2020 Summer, 2024 Summer | |
| Awad Zakka | Libya | Volleyball | 1980 Summer | |
| Miloud Zakka | 1980 Summer | |
| Ameen Zakkar | Qatar | Handball | 2016 Summer | |
| Janez Zakotnik | Yugoslavia | Road cycling | 1972 Summer | |
| Borek Zakouřil | Czech Republic | Alpine skiing | 2002 Winter, 2006 Winter | |
| Petra Zakouřilová | 2002 Winter, 2006 Winter, 2010 Winter | |
| Hana Žáková | Czechoslovakia | Rowing | 1992 Summer | |
| Petro Zakovorot | Russia | Fencing | 1900 Summer | |
| Katarzyna Żakowicz | Poland | Athletics | 2000 Summer | |
| Maks Żakowski [ Wikidata ] | Sailing | 2024 Summer | |
| Kimiko Zakreski | Canada | Snowboarding | 2010 Winter | |
| Soeli Garvão Zakrzeski | Brazil | Basketball | 2008 Summer | |
| Jan Zakrzewski | Poland | Athletics | 2004 Summer | |
| John Zakrzewski | France | Modern pentathlon | 2008 Summer | |
| Igor Zakurdayev | Kazakhstan | Alpine skiing | 2010 Winter, 2014 Winter, 2018 Winter | |
| Samuel Zakutney | Canada | Artistic gymnastics | 2024 Summer | |
| Ali Zaky | Egypt | 1948 Summer, 1952 Summer | |
| Hussein Zaky | Handball | 2000 Summer, 2004 Summer, 2008 Summer | |
| Georgy Zakyrich [ Wikidata ] | Russia | Fencing | 1912 Summer | |
| Sariya Zakyrova | Soviet Union, Unified Team | Rowing | 1988 Summer, 1992 Summer | |
| György Zala | Hungary | Canoe sprint | 1992 Summer, 1996 Summer, 2000 Summer | |
| Aysir Mohamed El-Zalabani | Egypt | Volleyball | 1976 Summer | |
| Margherita Zalaffi | Italy | Fencing | 1984 Summer, 1988 Summer, 1992 Summer, 1996 Summer, 2000 Summer | |
| Konstadinos Zalagitis | Greece | Athletics | 2000 Summer | |
| Gábor Zalai | Hungary | Sailing | 1980 Summer | |
| Mária Zalai-Kövi | Artistic gymnastics | 1948 Summer, 1952 Summer | |
| Gergő Zalánki | Water polo | 2016 Summer, 2020 Summer, 2024 Summer | |
| Zarley Zalapski | Canada | Ice hockey | 1988 Winter | |
| Miro Zalar | Sweden | Athletics | 1980 Summer, 1984 Summer | |
| Khudhir Zalata | Iraq | 1960 Summer, 1964 Summer | |
| Yauheni Zalaty | Independent Olympians | Rowing | 2024 Summer | |
| Víctor Zalazar | Argentina | Boxing | 1956 Summer | |
| David Zalcberg | Australia | Table tennis | 2004 Summer, 2008 Summer | |
| Domingo Zaldúa | Spain | Football | 1928 Summer | |
| Dorota Załęczna | Poland | Field hockey | 1980 Summer | |
| Dominik Záleský | Czech Republic | Bobsleigh | 2022 Winter | |
| Nejdet Zalev | Bulgaria | Wrestling | 1960 Summer | |
| Svetlana Zalevskaya | Kazakhstan | Athletics | 1996 Summer, 2000 Summer | |
| Aran Zalewski | Australia | Field hockey | 2016 Summer, 2020 Summer, 2024 Summer | |
| Bogdan Zalewski | Poland | Rowing | 2004 Summer | |
| Daniel Zalewski | Bobsleigh | 2014 Winter | |
| Janusz Zalewski | Sailing | 1936 Summer | |
| Karol Zalewski | Athletics | 2016 Summer, 2020 Summer, 2024 Summer | |
| Krystian Zalewski | 2016 Summer | |
| Stanislaw Zalewski | Sailing | 1936 Summer | |
| Alex Zaliauskas | Canada | Athletics | 1992 Summer | |
| Oscar Zallhagen | Sweden | 1920 Summer | |
| Joop Zalm | Netherlands | Weightlifting | 1928 Summer | |
| Christos Zalokostas | Greece | Fencing, Shooting | 1936 Summer | |
| Florin Zalomir | Romania | Fencing | 2012 Summer | |
| Antonín Žalský | Czech Republic | Athletics | 2004 Summer, 2012 Summer | |
| Tomer Zaltsman | Israel | Cycling mountain bike | 2024 Summer | |
| Kristaps Zaļupe | Latvia | Canoe sprint | 2008 Summer | |
| Sherab Zam | Bhutan | Archery | 2012 Summer | |
| Munawwar uz Zaman | Pakistan | Field hockey | 1972 Summer, 1976 Summer | |
| Salman Zaman | Bahrain | Shooting | 2008 Summer | |
| Tahir Zaman | Pakistan | Field hockey | 1988 Summer, 1992 Summer, 1996 Summer | |
| Jannis Zamanduridis | Germany | Wrestling | 2004 Summer | |
| Jake Zamansky | United States | Alpine skiing | 2010 Winter | |
| Ermelinda Zamba | Mozambique | Swimming | 2004 Summer | |
| Armando Zambaldo | Italy | Athletics | 1976 Summer | |
| Slaven Zambata | Yugoslavia | Football | 1964 Summer | |
| Paolo Zamboni | Italy | Athletics | 1960 Summer | |
| Vanessa Zambotti | Mexico | Judo | 2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer | |
| Anthony Zambrano | Colombia | Athletics | 2016 Summer, 2020 Summer, 2024 Summer | |
| Miguel Zambrano | Peru | Wrestling | 1972 Summer, 1980 Summer | |
| Yamila Zambrano | Cuba | Judo | 2004 Summer | |
| Gianluca Zambrotta | Italy | Football | 2000 Summer | |
| Nicolae Zamfir | Romania | Wrestling | 1984 Summer | |
| Gheorghe Zamfirescu | Water polo | 1972 Summer, 1976 Summer | |
| Gabriela Zamišková | Slovakia | Canoe slalom | 1996 Summer | |
| Andrey Zamkovoy | Russia, Russian Olympic Committee | Boxing | 2012 Summer, 2016 Summer, 2020 Summer | |
| Ahmed Zammel | Tunisia | Athletics | 1968 Summer | |
| Yasmin Zammit Stevens | Malta | Weightlifting | 2020 Summer | |
| Alexander Zammit | Wrestling | 1984 Summer | |
| Joseph Zammit | Australia | 1956 Summer | |
| Przemysław Zamojski | Poland | 3x3 basketball | 2020 Summer, 2024 Summer | |
| Elena Zamolodchikova | Russia | Artistic gymnastics | 2000 Summer, 2004 Summer | |
| Alfonso Zamora | Mexico | Boxing | 1972 Summer | |
| Andrés Zamora | Uruguay | Athletics | 2016 Summer | |
| Daniela Zamora | Chile | Football | 2020 Summer | |
| Elizabeth Zamora | Guatemala | Taekwondo | 2012 Summer | |
| Fernando Zamora | Cuba | Canoe sprint | 1992 Summer | |
| Fredy Zamora [ Wikidata ] | Nicaragua | Baseball | 1996 Summer | |
| María Zamora | Cuba | Softball | 2000 Summer | |
| Natalia Zamora | Mexico | Shooting | 2008 Summer | |
| Nelson Zamora | Uruguay | Athletics | 1992 Summer | |
| Ricardo Zamora | Spain | Football | 1920 Summer, 1924 Summer | |
| África Zamorano | Swimming | 2016 Summer, 2020 Summer, 2024 Summer | |
| Iván Zamorano | Chile | Football | 2000 Summer | |
| Bohdan Zamostianyk | Ukraine | Bobsleigh | 2002 Winter | |
| Alberto Zamot | Puerto Rico | Basketball | 1964 Summer, 1968 Summer | |
| Valentin Zamotaykin | Soviet Union | Sailing | 1964 Summer, 1972 Summer, 1976 Summer | |
| Tamara Zamotaylova | Artistic gymnastics | 1960 Summer, 1964 Summer | |
| Mikhail Zamotin | Canoe sprint | 1968 Summer | |
| Yevgeny Zamotin [ Wikidata ] | Russia | Wrestling | 1908 Summer | |
| Adam Žampa | Slovakia | Alpine skiing | 2014 Winter, 2018 Winter, 2022 Winter | |
| Andreas Žampa | 2014 Winter, 2018 Winter, 2022 Winter | |
| Primo Zamparini | Italy | Boxing | 1960 Summer | |
| Luciano Zampatti | Ski jumping | 1928 Winter | |
| Louis Zamperini | United States | Athletics | 1936 Summer | |
| José Zampicchiatti | Argentina | Road cycling | 1924 Summer | |
| Giorgio Zampori | Italy | Artistic gymnastics | 1912 Summer, 1920 Summer, 1924 Summer | |
| Ignacio Zamudio | Mexico | Athletics | 1996 Summer | |
| Yulissa Zamudio | Peru | Volleyball | 1996 Summer, 2000 Summer | |
| Olesya Zamula | Azerbaijan | Wrestling | 2008 Summer | |
| Rob Zamuner | Canada | Ice hockey | 1998 Winter | |
| Robert Žan [ Wikidata ] | Yugoslavia | Alpine skiing | 1988 Winter | |
| Alberta Zanardi | Italy | Canoe sprint | 1960 Summer | |
| Juan Zanassi | Argentina | Rowing | 1964 Summer | |
| Ivano Zanatta | Italy | Ice hockey | 1992 Winter | |
| Marino Zanatta | Basketball | 1972 Summer, 1976 Summer | |
| Oganes Zanazanyan | Soviet Union | Football | 1972 Summer | |
| Laura Zanazza | Italy | Artistic swimming | 2004 Summer | |
| Pércio Zancani | Brazil | Rowing | 1948 Summer | |
| Emanuela Zanchi | Italy | Water polo | 2004 Summer, 2008 Summer | |
| Marco Zanchi | Football | 2000 Summer | |
| Nilo Zandanel | Ski jumping | 1960 Winter, 1964 Winter | |
| Gerhard Zandberg | South Africa | Swimming | 2004 Summer, 2008 Summer | |
| Janus van der Zande | Netherlands | Athletics | 1952 Summer | |
| Micah Zandee-Hart | Canada | Ice hockey | 2022 Winter | |
| Gianpaolo Zandegiacomo | Italy | Curling | 2006 Winter | |
| Helge Zandén | Sweden | Art competitions | 1936 Summer | |
| Dietrich Zander | East Germany | Rowing | 1972 Summer | |
| Erich Zander | Germany | Field hockey | 1928 Summer, 1936 Summer | |
| Heinz Zander | Water polo | 1952 Summer | |
| Hermann Zander | Rowing | 1952 Summer | |
| Holger Zander | Germany, West Germany | Canoe sprint | 1964 Summer, 1968 Summer | |
| John Zander | Sweden | Athletics | 1912 Summer, 1920 Summer | |
| Klaus Zander | West Germany | Basketball | 1984 Summer | |
| Richard Zander | Figure skating | 1988 Winter | |
| Robert Zander | Sweden | Football | 1920 Summer | |
| Thomas Zander | Germany | Wrestling | 1992 Summer, 1996 Summer, 2000 Summer | |
| Abbas Zandi | Iran | 1948 Summer, 1952 Summer, 1956 Summer | |
| Iman Zandi | Basketball | 2008 Summer | |
| Gabrio Zandonà | Italy | Sailing | 2004 Summer, 2008 Summer, 2012 Summer | |
| Roberto Zandonella | Bobsleigh | 1968 Winter, 1972 Winter | |
| Marco Zandron | Spain | Figure skating | 2022 Winter | |
| Falko Zandstra | Netherlands | Speed skating | 1992 Winter, 1994 Winter | |
| Werner Zandt | Germany | Athletics | 1952 Summer | |
| Clayton Zane | Australia | Football | 2000 Summer | |
| Bram Zanella | Venezuela | Shooting | 1960 Summer | |
| Rafaela Zanellato | Brazil | Rugby sevens | 2020 Summer | |
| Bia Zaneratto | Football | 2016 Summer, 2020 Summer | |
| Ante Žanetić | Yugoslavia | 1960 Summer | |
| Alberto Zanetti | Argentina | Sailing | 1988 Summer, 1992 Summer | |
| Arthur Zanetti | Brazil | Artistic gymnastics | 2012 Summer, 2016 Summer, 2020 Summer | |
| Cristiano Zanetti | Italy | Football | 2000 Summer | |
| Javier Zanetti | Argentina | 1996 Summer | |
| Linda Zanetti | Switzerland | Road cycling | 2024 Summer | |
| Luigi Zanetti | Italy | Artistic gymnastics | 1948 Summer, 1952 Summer | |
| Paulo Zanetti | Brazil | Swimming | 1972 Summer | |
| Roger Zanetti | Switzerland | Field hockey | 1952 Summer, 1960 Summer | |
| Jelena Zanevskaja | Lithuania | Artistic gymnastics | 2008 Summer | |
| Flavia Zanfra | Italy | Shooting | 1988 Summer | |
| Ruddy Zang Milama | Gabon | Athletics | 2008 Summer, 2012 Summer, 2016 Summer | |
| Zang Ha | China | Rowing | 2020 Summer | |
| Zang Jialiang | Curling | 2010 Winter, 2014 Winter | |
| Zang Ruxin | Snowboarding | 2018 Winter, 2022 Winter | |
| Gabi Zange | East Germany | Speed skating | 1984 Winter, 1988 Winter | |
| Thomas Zangerl | Austria | Freestyle skiing | 2010 Winter, 2014 Winter, 2018 Winter | |
| Helmut Zanghellini | Germany | Ice hockey | 1964 Winter | |
| Hugues Fabrice Zango | Burkina Faso | Athletics | 2016 Summer, 2020 Summer, 2024 Summer | |
| Elena Zangor | Romania | Cross country skiing | 1956 Winter | |
| Ion Zangor | Bobsleigh | 1972 Winter | |
| Danielle Zangrando | Brazil | Judo | 1996 Summer, 2004 Summer | |
| Octávio Zani | Athletics | 1924 Summer | |
| Mike Zanier | Italy | Ice hockey | 1992 Winter | |
| Mario Zanin | Road cycling | 1964 Summer | |
| Valentin Zanin | Soviet Union | Rowing | 1956 Summer, 1960 Summer | |
| Roland Zaninetti | Switzerland | Field hockey | 1960 Summer | |
| Ana Zaninović | Croatia | Taekwondo | 2012 Summer, 2016 Summer | |
| Lucija Zaninović | 2012 Summer, 2016 Summer | |
| Marjan Zaninović | Yugoslavia | Rowing | 1936 Summer | |
| Heinrich Zänker | Germany | 1928 Summer | |
| Vsevolod Zanko | Russia | Swimming | 2016 Summer | |
| Eduard Zankovets | Belarus | Ice hockey | 1998 Winter, 2002 Winter | |
| Mirko Zanni | Italy | Weightlifting | 2020 Summer | |
| Osvaldo Zanni | Argentina | Field hockey | 1976 Summer | |
| Rolando Zanni | Italy | Alpine skiing | 1936 Winter | |
| Edelmar Zanol | Brazil | Judo | 1996 Summer | |
| Costanza Zanoletti | Italy | Skeleton | 2006 Winter, 2010 Winter | |
| Michel Zanoli | Netherlands | Road cycling | 1988 Summer | |
| Paul Zanolini | United States | Wrestling | 1920 Summer | |
| Umberto Zanolini | Italy | Artistic gymnastics | 1912 Summer | |
| Camillo Zanolli | Cross country skiing | 1956 Winter | |
| Jean-Louis Zanon | France | Football | 1984 Summer | |
| Marco Zanon | Italy | Biathlon | 1984 Winter | |
| Nicola Zanon | Thailand | Alpine skiing | 2018 Winter, 2022 Winter | |
| Ludovic Zanoni | Romania | Road cycling | 1960 Summer | |
| Marlon Zanotelli | Brazil | Equestrian jumping | 2020 Summer | |
| Fabrizio Zanotti | Paraguay | Golf | 2016 Summer, 2020 Summer, 2024 Summer | |
| Kendra Zanotto | United States | Artistic swimming | 2004 Summer | |
| Georgii Zantaraia | Ukraine | Judo | 2012 Summer, 2016 Summer, 2020 Summer | |
| Krisztina Zantleitner | Hungary | Water polo | 2004 Summer, 2008 Summer | |
| Zantzinger, Borie & Medary | United States | Art competitions | 1928 Summer | |
| Stefania Zanussi | Italy | Basketball | 1996 Summer | |
| Cesare Zanzottera | Track cycling | 1908 Summer | |
| Henda Zaouali | Tunisia | Fencing | 1996 Summer | |
| Mohamed Zaoui | Algeria | Boxing | 1984 Summer | |
| Redwan El-Zaouiki | Syria | Judo | 1980 Summer | |
| Emmanuel Zapata | Argentina | Modern pentathlon | 2016 Summer | |
| Fernando Zapata | Rowing | 1996 Summer | |
| Guillermo Zapata | Colombia | Athletics | 1956 Summer | |
| Javier de Jesús Zapata | Road cycling | 1996 Summer | |
| Rayderley Zapata | Spain | Artistic gymnastics | 2016 Summer, 2020 Summer, 2024 Summer | |
| Sandra Zapata | Colombia | Athletics | 2004 Summer, 2008 Summer | |
| Józef Zapędzki | Poland | Shooting | 1964 Summer, 1968 Summer, 1972 Summer, 1976 Summer, 1980 Summer | |
| Manfred Zapf | East Germany | Football | 1972 Summer | |
| Lubomír Zapletal | Czechoslovakia | Rowing | 1972 Summer, 1976 Summer, 1980 Summer | |
| Emma Zapletalová | Slovakia | Athletics | 2020 Summer | |
| Ryan Zapolski | United States | Ice hockey | 2018 Winter | |
| Anna Zaporozhanova | Ukraine | Tennis | 2000 Summer | |
| Viktor Zaporozhets | Soviet Union | Boxing | 1968 Summer | |
| Despina Zapounidou | Greece | Athletics | 2008 Summer, 2012 Summer | |
| Daniele Zappaterra | Italy | Boxing | 1976 Summer | |
| Oswald Zappelli | Switzerland | Fencing | 1948 Summer, 1952 Summer | |
| Dimitar Zapryanov | Bulgaria | Judo | 1980 Summer, 1988 Summer | |
| Petar Zapryanov | Shooting | 1980 Summer, 1988 Summer, 1992 Summer | |
| Paul Zar | Virgin Islands | Bobsleigh | 1992 Winter, 1994 Winter, 1998 Winter, 2002 Winter | |
| Zdeněk Žára | Czechoslovakia | Rowing | 1956 Summer | |
| Miha Zarabec | Slovenia | Handball | 2016 Summer, 2024 Summer | |
| Agustín Zaragoza | Mexico | Boxing | 1968 Summer | |
| Daniel Zaragoza | 1980 Summer | |
| Elizabeth Zaragoza | El Salvador | Athletics | 2004 Summer | |
| Marco Zaragoza | Mexico | Track cycling | 1992 Summer, 1996 Summer | |
| László Zarándi | Hungary | Athletics | 1952 Summer | |
| Jesús Zárate | Mexico | Road cycling | 1996 Summer | |
| Luis Zárate | 1960 Summer | |
| Georgios Zaravinas | Greece | Handball | 2004 Summer | |
| Renata Zarazúa | Mexico | Tennis | 2020 Summer | |
| Alessia Zarbo | France | Athletics | 2024 Summer | |
| Bonifacio Zarcal | Philippines | Boxing | 1948 Summer | |
| Iván Zarco | Honduras | Athletics | 2020 Summer | |
| Luciano Zardi | Italy | Weightlifting | 1952 Summer | |
| Edoardo Zardini | Alpine skiing | 2002 Winter | |
| Ernesto Zardini | Nordic combined, Ski jumping | 1932 Winter | |
| Sergio Zardini | Bobsleigh | 1964 Winter | |
| Emanuela Zardo | Switzerland | Tennis | 1992 Summer | |
| Giulio Zardo | Canada | Bobsleigh | 2002 Winter | |
| Amir Hossein Zare | Iran | Wrestling | 2020 Summer, 2024 Summer | |
| Nikhat Zareen | India | Boxing | 2024 Summer | |
| Ota Zaremba | Czechoslovakia | Weightlifting | 1980 Summer | |
| Peter Zaremba | United States | Athletics | 1932 Summer | |
| Janusz Zarenkiewicz | Poland | Boxing | 1988 Summer | |
| Irina Zaretska | Azerbaijan | Karate | 2020 Summer | |
| Alexandra Zaretsky | Israel | Figure skating | 2006 Winter, 2010 Winter | |
| Roman Zaretsky | 2006 Winter, 2010 Winter | |
| Metodi Zarev | Bulgaria | Wrestling | 1968 Summer | |
| Bogdana Zareva [ Wikidata ] | Artistic swimming | 2004 Summer | |
| Teodora Zareva | Rowing | 1988 Summer, 1992 Summer | |
| Violeta Zareva | 1988 Summer, 1992 Summer | |
| Hana Zarevúcká | Czechoslovakia | Basketball | 1988 Summer | |
| Amir Zargari | Iran | Road cycling | 2004 Summer, 2012 Summer | |
| Hugo Zarich | Argentina | Football | 1960 Summer | |
| Jorge Zarif Neto | Brazil | Sailing | 1984 Summer, 1988 Summer | |
| Jorge Zarif | 2012 Summer, 2016 Summer, 2020 Summer | |
| Hamzeh Zarini | Iran | Volleyball | 2016 Summer | |
| Hossein Zarini | Weightlifting | 1956 Summer | |
| Danis Zaripov | Russia | Ice hockey | 2010 Winter | |
| Amina Zaripova | Rhythmic gymnastics | 1996 Summer | |
| Yuliya Zaripova | Athletics | 2012 Summer | |
| Dor Zarka [ Wikidata ] | Israel | Sailing | 2024 Summer | |
| Vasilios Zarkadis | Greece | Fencing | 1920 Summer | |
| Malkhaz Zarkua | Georgia | Wrestling | 2012 Summer | |
| Marina Zarma | Cyprus | Swimming | 1996 Summer | |
| Bijan Zarnegar | Iran | Fencing | 1964 Summer | |
| Esfandiar Zarnegar | 1976 Summer | |
| Shahpour Zarnegar | 1964 Summer | |
| John Zarno | Great Britain | 1984 Summer | |
| Anita Zarnowiecki | Sweden | Swimming | 1972 Summer | |
| Bernt Zarnowiecki | 1972 Summer | |
| Zbigniew Żarnowiecki | Poland | Rowing | 1952 Summer | |
| Oleksandr Zarovniy | Ukraine | Cross country skiing | 1998 Winter | |
| Ángel Zárraga | Mexico | Art competitions | 1928 Summer, 1932 Summer | |
| Bruno Zarrillo | Italy | Ice hockey | 1992 Winter, 1994 Winter, 1998 Winter | |
| Mbarek Zarrougui | Morocco | Boxing | 1976 Summer | |
| Mongi Soussi Zarrouki | Tunisia | Athletics | 1960 Summer | |
| Jerzy Zaruba | Poland | Art competitions | 1928 Summer | |
| Radek Záruba | Czech Republic | Canoe sprint | 2000 Summer | |
| Roman Zarubin | Russia | 2000 Summer | |
| Maria Zaruc | Romania | Alpine skiing | 1994 Winter | |
| Marco Zarucchi | Switzerland | Nordic combined | 1992 Winter, 1998 Winter | |
| Jamal Zarugh | Libya | Volleyball | 1980 Summer | |
| Anton Zarutskiy | Russia | Rowing | 2016 Summer | |
| Jan Zarycki | Poland | Alpine skiing | 1956 Winter | |
| Carlos Zarzar | Chile | Shooting | 1984 Summer | |
| Dimitrios Zarzavatsidis | Greece | Weightlifting | 1980 Summer | |
| Marina Zarzhitskaya | Belarus | Artistic gymnastics | 2000 Summer | |
| Zbigniew Zarzycki | Poland | Volleyball | 1968 Summer, 1972 Summer, 1976 Summer | |
| Francisco Zas | Spain | Taekwondo | 2000 Summer | |
| Mariusz Zasada | Poland | Artistic gymnastics | 1976 Summer | |
| Tony Zasada | Canada | Rowing | 1984 Summer | |
| Igor Zaseda | Soviet Union | Swimming | 1956 Summer | |
| Alen Zaseyev | Ukraine | Wrestling | 2016 Summer | |
| Sergey Zasimovich | Kazakhstan | Athletics | 2008 Summer | |
| Roksana Zasina | Poland | Wrestling | 2020 Summer | |
| Ivano Zasio | Italy | Rowing | 1996 Summer | |
| Oleksandr Zaskalko | Soviet Union, Ukraine | 1988 Summer, 1996 Summer, 2000 Summer | |
| Leonid Zaslavsky | Australia | Wrestling | 1996 Summer | |
| Larysa Zaspa | Ukraine | Handball | 2004 Summer | |
| Dumitru Zastoico | Moldova | Swimming | 2000 Summer | |
| Mitja Zastrow | Netherlands | 2004 Summer, 2008 Summer | |
| Aleksandr Zasukhin | Soviet Union | Boxing | 1952 Summer | |
| Natalya Zasulskaya | Soviet Union, Unified Team, Russia | Basketball | 1988 Summer, 1992 Summer, 2000 Summer | |
| Héctor Zatarain | Mexico | Equestrian jumping | 1964 Summer | |
| Emil Zátopek | Czechoslovakia | Athletics | 1948 Summer, 1952 Summer, 1956 Summer | |
| Dana Zátopková | 1948 Summer, 1952 Summer, 1956 Summer, 1960 Summer | |
| Paweł Zatorski | Poland | Volleyball | 2016 Summer, 2020 Summer, 2024 Summer | |
| Juraj Zaťovič | Slovakia | Water polo | 2000 Summer | |
| Aleksey Zatsepin | Russia | Swimming | 2004 Summer | |
| Ernst Zaugg | Switzerland | Athletics | 1960 Summer | |
| Jinelle Zaugg-Siergiej | United States | Ice hockey | 2010 Winter | |
| Rostyslav Zaulychnyi | Unified Team, Ukraine | Boxing | 1992 Summer, 1996 Summer | |
| Irēna Žauna | Latvia | Athletics | 2000 Summer | |
| Gerd Zaunschirm | Austria | Bobsleigh | 1976 Winter, 1980 Winter | |
| Olga Zausaylova | Russia | Triathlon | 2008 Summer | |
| Waldemar Zausz | Poland | Judo | 1976 Summer | |
| Radek Zavadil | Czechoslovakia | Rowing | 1992 Summer | |
| Lenka Zavadilová | 1992 Summer | |
| Anja Zavadlav | Yugoslavia | Alpine skiing | 1980 Winter, 1984 Winter | |
| Barbora Závadová | Czech Republic | Swimming | 2012 Summer, 2016 Summer | |
| Victoria Zavadovskaya | Russian Olympic Committee | Freestyle skiing | 2018 Winter | |
| Dmytro Zavadskyi | Ukraine | Badminton | 2012 Summer | |
| Gábor Zavadszky | Hungary | Football | 1996 Summer | |
| Alejandra Zavala | Mexico | Shooting | 2012 Summer, 2016 Summer, 2024 Summer | |
| Guillermo Zavala | Swimming | 1976 Summer, 1980 Summer | |
| Miguel Ángel Zavala | Diving | 1984 Summer | |
| Ramón Zavaleta | Peru | Road cycling | 1984 Summer | |
| Vyacheslav Zavalnyuk | Ukraine | Ice hockey | 2002 Winter | |
| Clint Zavaras | Greece | Baseball | 2004 Summer | |
| Othello Zavaroni | France | Art competitions | 1948 Summer | |
| Alena Zavarzina | Russia, Russian Olympic Committee | Snowboarding | 2010 Winter, 2014 Winter, 2018 Winter | |
| Larisa Zavarzina | Soviet Union | Rowing | 1980 Summer | |
| Václav Zavázal | Czechoslovakia | Shooting | 1960 Summer | |
| Rokas Zaveckas | Lithuania | Alpine skiing | 2014 Winter | |
| Denys Zavhorodnyy | Ukraine | Swimming | 1996 Summer | |
| Kirk Zavieh | Great Britain | Fencing | 1992 Summer | |
| James Zavitz | Canada | Shooting | 1956 Summer | |
| Vasile Zavoda | Romania | Football | 1952 Summer | |
| Danilo Zavoli | San Marino | Swimming | 1992 Summer | |
| Maxim Zavozin | Hungary | Figure skating | 2010 Winter | |
| Jiří Zavřel | Czechoslovakia | Rowing | 1936 Summer | |
| Alexander Zavyalov | Soviet Union | Cross country skiing | 1980 Winter, 1984 Winter | |
| Vladimir Zavyalov | Kazakhstan | Ice hockey | 1998 Winter | |
| Olga Zavyalova | Russia | Cross country skiing | 2002 Winter, 2006 Winter, 2010 Winter | |
| Zaw Weik | India | Weightlifting | 1936 Summer | |
| Robert Zawada | Poland | Handball | 1972 Summer | |
| Sławomir Zawada | Weightlifting | 1988 Summer | |
| Angelica Zawadzki [ Wikidata ] | Mexico | Canoe sprint | 1968 Summer | |
| Janusz Zawadzki | Poland | Ice hockey | 1956 Winter | |
| Włodzimierz Zawadzki | Rowing | 1936 Summer | |
| Włodzimierz Zawadzki | Wrestling | 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer | |
| Nagwan El-Zawawi | Egypt | Weightlifting | 2000 Summer | |
| Wan Zawawi | Malaysia | Football | 1972 Summer | |
| Andrzej Zawieja | Poland | Sailing | 1968 Summer | |
| Martin Zawieja | West Germany, Germany | Weightlifting | 1988 Summer, 1992 Summer | |
| Aleksandra Zawistowska [ Wikidata ] | Poland | Rhythmic gymnastics | 2004 Summer | |
| Radosław Zawrotniak | Fencing | 2008 Summer, 2012 Summer | |
| Elaine Zayak | United States | Figure skating | 1984 Winter | |
| Mohammad Zayar | Syria | Wrestling | 1984 Summer, 1988 Summer | |
| Daniel Zayas | Cuba | Weightlifting | 1976 Summer | |
| Luis Zayas | Athletics | 2020 Summer, 2024 Summer | |
| Kotoki Zayasu | Japan | Volleyball | 2016 Summer | |
| Georgi Zaychev | Bulgaria | Wrestling | 1956 Summer | |
| Yousef Zayed | Kuwait | Football | 2000 Summer | |
| Pyotr Zayev | Soviet Union | Boxing | 1980 Summer | |
| Leonid Zayko | Volleyball | 1972 Summer | |
| Zaynab Dayibekova | Uzbekistan | Fencing | 2020 Summer, 2024 Summer | |
| Rick Zayonc | Canada | Water polo | 1984 Summer | |
| Anatoly Zaytsev | Soviet Union | Nordic combined | 1972 Winter | |
| Boris Mikhaylovich Zaytsev | Ice hockey | 1964 Winter | |
| Ivan Zaytsev | Uzbekistan | Athletics | 2012 Summer, 2016 Summer | |
| Ivan Zaytsev | Italy | Volleyball | 2012 Summer, 2016 Summer, 2020 Summer | |
| Kostyantyn Zaytsev | Ukraine | Rowing | 2000 Summer, 2012 Summer | |
| Lev Zaytsev | Soviet Union | Speed skating | 1960 Winter, 1964 Winter | |
| Oleg Zaytsev | Ice hockey | 1964 Winter, 1968 Winter | |
| Vyacheslav Zaytsev | Volleyball | 1976 Summer, 1980 Summer, 1988 Summer | |
| Yevgeny Zaytsev | Boxing | 1988 Summer | |
| Olesya Zaytseva | Ukraine | Artistic swimming | 2000 Summer | |
| Francesco Zaza | Italy | Equestrian dressage | 2020 Summer | |
| Hend Zaza | Syria | Table tennis | 2020 Summer | |
| Valentina Zazdravnykh | Soviet Union | Field hockey | 1980 Summer | |
| Sokwakhana Zazini | South Africa | Athletics | 2020 Summer | |
| Zaza Zazirov | Ukraine | Wrestling | 1996 Summer, 2000 Summer | |
| Georgi Zažitski | Soviet Union | Fencing | 1972 Summer | |
| Eduardo Zazueta | Mexico | Boxing | 1964 Summer | |
| Lorenzo Zazzeri | Italy | Swimming | 2020 Summer, 2024 Summer | |
| Noemi Zbären | Switzerland | Athletics | 2012 Summer | |
| Beat Zberg | Road cycling | 1996 Summer | |
| Luzia Zberg | 1992 Summer | |
| Markus Zberg | 2000 Summer, 2004 Summer | |
| Beata Żbikowska | Poland | Athletics | 1960 Summer | |
| Carlos Zbinden | Chile | 2000 Summer | |
| Mohamed Zbir | Morocco | Boxing | 1992 Summer, 1996 Summer | |
| Michał Zblewski | Poland | Bobsleigh | 2006 Winter, 2010 Winter | |
| Robert Žbogar | Slovenia | Swimming | 2012 Summer, 2016 Summer | |
| Vasilij Žbogar | Sailing | 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer | |
| Franci Žbontar | Yugoslavia | Ice hockey | 1972 Winter, 1976 Winter | |
| Marjan Žbontar | 1976 Winter | |
| Arthur Zborzil | Austria | Tennis | 1908 Summer, 1912 Summer | |
| Kinga Zbylut [ Wikidata ] | Poland | Biathlon | 2022 Winter | |
| Ivars Zdanovskis | Latvia | Weightlifting | 1996 Summer | |
| Dorota Zdanowska | Poland | Rowing | 1976 Summer | |
| Arnold Zdebiak | Bobsleigh | 2018 Winter | |
| Bojan Zdelar | Serbia | Canoe sprint | 2020 Summer | |
| Bojan Zdešar | Slovenia | Swimming | 2004 Summer | |
| Dunja Zdouc | Austria | Biathlon | 2018 Winter, 2022 Winter | |
| Jure Zdovc | Yugoslavia | Basketball | 1988 Summer | |
| Nikola Zdráhalová | Czech Republic | Speed skating | 2018 Winter, 2022 Winter | |
| Albena Zdravkova | Bulgaria | Luge | 1992 Winter | |
| Maria Zdravkova | Biathlon | 2022 Winter | |
| Dragan Zdravković | Yugoslavia | Athletics | 1980 Summer | |
| Hans Zdražila | Czechoslovakia | Weightlifting | 1964 Summer, 1968 Summer | |
| Krystian Zdrojkowski | Poland | Short track speed skating | 2002 Winter | |
| Elena Zdrokova | Russian Olympic Committee | Rugby sevens | 2020 Summer | |
| Stanisław Zduńczyk | Poland | Volleyball | 1968 Summer | |
| Katarzyna Zdziebło | Athletics | 2020 Summer, 2024 Summer | |
| Zé Carlos | Brazil | Football | 1972 Summer | |
| Zé Carlos | 1976 Summer | |
| Zé Elias | 1996 Summer | |
| Zé Luiz | 1964 Summer | |
| Zé Roberto | 1964 Summer | |
| Gibrán Zea [ Wikidata ] | Mexico | Fencing | 2024 Summer | |
| Oswaldo Zea | Venezuela | Athletics | 1984 Summer | |
| Urbano Zea | Mexico | Basketball | 1960 Summer | |
| Urbano Zea | Swimming | 1988 Summer | |
| Jack Zealley | Great Britain | Football | 1900 Summer | |
| Alam Zeb | Pakistan | Athletics | 1952 Summer | |
| Aurang Zeb | 1952 Summer | |
| Patrice Traoré Zeba | Burkina Faso | 1992 Summer | |
| Horacio Zeballos | Argentina | Tennis | 2020 Summer | |
| Branko Zebec | Yugoslavia | Football | 1952 Summer | |
| Ernests Zēbolds | Latvia | Cycling BMX freestyle | 2024 Summer | |
| Fred Zebouni | Lebanon | Sailing | 1960 Summer | |
| Juozas Žebrauskas | Lithuania | Football | 1924 Summer | |
| Demetrij Žebre | Yugoslavia | Art competitions | 1936 Summer | |
| Lars Zebroski | United States | Road cycling | 1960 Summer | |
| Elżbieta Żebrowska | Poland | Athletics | 1968 Summer | |
| Gary Zebrowski | France | Snowboarding | 2006 Winter, 2010 Winter | |
| Zeca | Brazil | Football | 2016 Summer | |
| Lino Zecchini | Italy | Alpine skiing | 1956 Winter | |
| Luiz Zech | Brazil | Volleyball | 1972 Summer | |
| Alfred Zechmeister | Austria | Canoe sprint | 1972 Summer | |
| Christa Zechmeister | West Germany | Alpine skiing | 1976 Winter | |
| Marianne Zechmeister | 1980 Winter | |
| Christos Zechouritis | Greece | Athletics | 1904 Summer | |
| Isabel Zedlacher | Austria | Snowboarding | 1998 Winter | |
| Franz von Zedlitz und Leipe | Germany | Shooting | 1912 Summer | |
| Jiří Zedníček | Czechoslovakia | Basketball | 1972 Summer | |
| Richard Zedník | Slovakia | Ice hockey | 2006 Winter, 2010 Winter | |
| Robert Zedwane | Canada | Shooting | 1984 Summer | |
| Zbigniew Żedzicki | Poland | Wrestling | 1968 Summer, 1972 Summer, 1976 Summer | |
| Age van der Zee | Netherlands | Athletics | 1928 Summer | |
| Anouska van der Zee | Road cycling | 2004 Summer | |
| Hein van der Zee | Boxing | 1952 Summer | |
| Axel Zeebroek | Belgium | Triathlon | 2008 Summer | |
| Guus Zeegers | Netherlands | Athletics | 1928 Summer | |
| Jan Zeegers | 1924 Summer, 1928 Summer | |
| Marijke Zeekant | Rowing | 1988 Summer | |
| Hans van Zeeland | Water polo | 1976 Summer, 1980 Summer | |
| Carling Zeeman | Canada | Rowing | 2016 Summer, 2020 Summer | |
| Mohamed Omar El-Zeer | Egypt | Football | 1984 Summer | |
| Ariel Ze'evi | Israel | Judo | 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer | |
| António Zeferino | Cape Verde | Athletics | 1996 Summer, 2000 Summer, 2004 Summer | |
| Carlos Zegarra | Peru | Judo | 2008 Summer | |
| Afrodite Zegers | Netherlands | Sailing | 2016 Summer, 2020 Summer | |
| Margriet Zegers | Field hockey | 1984 Summer | |
| Daniel Zegeye | Ethiopia | Athletics | 2000 Summer | |
| Cor Zegger | Netherlands | Swimming | 1920 Summer | |
| Messaoud Zeghdane | Algeria | Wrestling | 2008 Summer | |
| Antoine Zeghdar | France | Rugby sevens | 2024 Summer | |
| Ted Zegwaard | Netherlands | Boxing | 1920 Summer | |
| Slim Zehani | Tunisia | Handball | 2000 Summer | |
| Hannes Zehentner | West Germany | Alpine skiing | 1988 Winter | |
| Hans Zehetmayer | Austria | Boxing | 1936 Summer | |
| Elisabeth Zehetner | Handball | 1984 Summer | |
| Johann Zehetner | 1936 Summer | |
| Josef Zehnder | Switzerland | Ski jumping | 1964 Winter, 1968 Winter, 1972 Winter | |
| Dan Zehr | United States | Swimming | 1932 Summer | |
| Andreas Zehrer | Austria | Equestrian eventing | 2004 Summer | |
| Monika Zehrt | East Germany | Athletics | 1972 Summer | |
| Artūrs Zeiberliņš | Latvia | Track cycling | 1924 Summer | |
| Emil Zeibig | France | Swimming | 1924 Summer, 1928 Summer | |
| Josh Zeid | Israel | Baseball | 2020 Summer | |
| Mannad Zeid | Egypt | Fencing | 2012 Summer | |
| Judith Zeidler | East Germany, Germany | Rowing | 1988 Summer, 1992 Summer | |
| Oliver Zeidler | Germany | 2020 Summer, 2024 Summer | |
| Erik Zeidlitz | Sweden | Canoe sprint | 1968 Summer, 1972 Summer, 1976 Summer, 1980 Summer | |
| Parviz Zeidvand | Iran | Wrestling | 2000 Summer, 2004 Summer | |
| Hans Zeier | Switzerland | Cross country skiing | 1928 Winter | |
| Joanna Zeiger | United States | Triathlon | 2000 Summer | |
| Vasilij Zeiher | Germany | Wrestling | 2000 Summer | |
| Theodor Zeilau [ Wikidata ] | Denmark | Modern pentathlon | 1912 Summer | |
| Sepp Zeilbauer | Austria | Athletics | 1972 Summer, 1976 Summer, 1980 Summer | |
| Gabriele Zeilinger | Fencing | 1948 Summer | |
| Ali Zein | Egypt | Handball | 2016 Summer, 2020 Summer, 2024 Summer | |
| Nasser Zeinalnia | Iran | Wrestling | 1988 Summer | |
| Raya Zeineddine | Syria | Shooting | 2012 Summer | |
| Sherine El-Zeiny | Egypt | Artistic gymnastics | 2008 Summer, 2012 Summer, 2016 Summer | |
| Christoph-Michael Zeisner | West Germany | Shooting | 1972 Summer, 1976 Summer | |
| Oskar Zeissner | Germany | Road cycling | 1952 Summer | |
| Johann Zeitler | Football | 1952 Summer, 1956 Summer | |
| Lydia Zeitlhofer | Artistic gymnastics | 1952 Summer | |
| Andrey Zeits | Kazakhstan | Road cycling | 2016 Summer | |
| Christian Zeitz | Germany | Handball | 2004 Summer, 2008 Summer | |
| Constanze Zeitz | West Germany | Luge | 1984 Winter | |
| August Hermann Zeiz | Germany | Art competitions | 1932 Summer | |
| Youssra Zekrani | Morocco | Fencing | 2016 Summer, 2024 Summer | |
| Wiesława Żelaskowska | Poland | Artistic gymnastics | 1980 Summer | |
| Jaime Zelaya | Honduras | Athletics | 1992 Summer | |
| Salomon Zeldenrust | Netherlands | Fencing | 1920 Summer | |
| Juan Miguel Zeledón | Nicaragua | Athletics | 2008 Summer | |
| Kazimierz Zelek | Poland | Cross country skiing | 1960 Winter | |
| Igor Zelenay | Slovakia | Tennis | 2016 Summer | |
| Karel Zelenka | Italy | Figure skating | 2006 Winter | |
| Sarah McIlduff | United States | Rowing | 2012 Summer | |
| Alexander Zelenko | Belarus | Equestrian eventing | 2020 Summer | |
| Lucie Zelenková | Czech Republic | Triathlon | 2004 Summer | |
| Aleksandr Zelenovsky | Belarus | Sailing | 1996 Summer | |
| Varvara Zelenskaya | Unified Team, Russia | Alpine skiing | 1992 Winter, 1994 Winter, 1998 Winter, 2002 Winter | |
| Aleksei Zelensky | Luge | 1992 Winter, 1994 Winter | |
| Valeri Zelepukin | Russia | Ice hockey | 1998 Winter | |
| Svitlana Zelepukina | Ukraine | Artistic gymnastics | 1996 Summer | |
| Jan Železný | Czechoslovakia, Czech Republic | Athletics | 1988 Summer, 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer | |
| Mourad Zelfani | Tunisia | Wrestling | 1988 Summer | |
| Stefan Zelger | Italy | Cross country skiing | 2018 Winter | |
| Antonio Zelić | Croatia | Bobsleigh | 2018 Winter | |
| Ned Zelic | Australia | Football | 1992 Summer | |
| Dariusz Zelig | Poland | Basketball | 1980 Summer | |
| Nicol Zelikman | Israel | Rhythmic gymnastics | 2020 Summer | |
| Yuriy Zelikovich | Soviet Union | Rowing | 1988 Summer | |
| Iveta Zelingerová | Czechoslovakia, Czech Republic | Cross country skiing | 1992 Winter, 1994 Winter, 1998 Winter | |
| Jessica Zelinka | Canada | Athletics | 2008 Summer, 2012 Summer | |
| Peter Zelinka | Czechoslovakia | Biathlon | 1980 Winter, 1984 Winter | |
| Anastasiya Zelinskaya [ Wikidata ] | Uzbekistan | Swimming | 2024 Summer | |
| Filip Zeljko [ Wikidata ] | Croatia | Table tennis | 2024 Summer | |
| Žan Luka Zelko | Slovenia | Sailing | 2020 Summer, 2024 Summer | |
| Christopher Zeller | Germany | Field hockey | 2004 Summer, 2008 Summer, 2012 Summer | |
| Katrin Zeller | Cross country skiing | 2010 Winter, 2014 Winter | |
| Philipp Zeller | Field hockey | 2008 Summer, 2012 Summer | |
| Toni Zeller | Cross country skiing | 1936 Winter | |
| Heidi Zeller-Bähler | Switzerland | Alpine skiing | 1992 Winter, 1994 Winter | |
| Kurt Zellhofer | Austria | Road cycling, Track cycling | 1980 Summer, 1984 Summer | |
| Poul Zellmann | Germany | Swimming | 2020 Summer | |
| Lucas Zellmer | Sailing | 2004 Summer | |
| Michael Zellmer | Water polo | 2004 Summer | |
| Martina Zellner | Biathlon | 1998 Winter | |
| Sepp Zellweger | Switzerland | Artistic gymnastics | 1984 Summer, 1988 Summer | |
| Vsevolods Zeļonijs | Latvia | Judo | 1992 Summer, 2000 Summer, 2004 Summer, 2008 Summer | |
| Pēteris Zeltiņš | Soviet Union | Athletics | 1952 Summer | |
| Bruno Zeltner | Switzerland | Sailing | 1992 Summer | |
| Dita Želvienė | Lithuania | Swimming | 1996 Summer | |
| Viktorija Žemaitytė | Athletics | 2008 Summer | |
| Bohumír Zeman | Czechoslovakia | Alpine skiing | 1976 Winter, 1980 Winter | |
| František Zeman | Nordic combined | 1976 Winter | |
| Jaromír Zeman | Bohemia | Tennis | 1912 Summer | |
| Jaroslav Zeman | Czechoslovakia, Czech Republic | Wrestling | 1988 Summer, 1992 Summer, 1996 Summer | |
| Jindřich Zeman | Czechoslovakia | Luge | 1976 Winter, 1980 Winter | |
| Josef Zeman | Austria | Weightlifting | 1928 Summer, 1936 Summer | |
| Josef Zeman | Czechoslovakia | Wrestling | 1952 Summer | |
| Miroslav Zeman | 1968 Summer, 1972 Summer | |
| Marián Zemaník | Slovakia | Luge | 2014 Winter | |
| Andrea Zemanová | Czech Republic | Freestyle skiing | 2014 Winter | |
| Irena Zemanová | Figure skating | 1994 Winter | |
| Radka Zemanová | Czechoslovakia | Artistic gymnastics | 1980 Summer | |
| Jiří Žemba | Athletics | 1964 Summer | |
| Raymond Zembri | France | 1972 Summer | |
| Jean-André Zembsch | Belgium | Field hockey | 1972 Summer | |
| Mark Zembsch | United States | Rowing | 1988 Summer | |
| János Zemen | Hungary | Athletics | 1976 Summer | |
| Camillo Zemi | Italy | 1924 Summer, 1928 Summer | |
| Paige Zemina | United States | Swimming | 1988 Summer | |
| Ladislav Žemla | Bohemia, Czechoslovakia | Tennis | 1908 Summer, 1912 Summer, 1920 Summer, 1924 Summer | |
| Anna Żemła-Krajewska | Poland | Judo | 2004 Summer | |
| Milan Žemlička | Czech Republic | Biathlon | 2022 Winter | |
| Richard Žemlička | Czechoslovakia, Czech Republic | Ice hockey | 1992 Winter, 1994 Winter | |
| Olha Zemlyak | Ukraine | Athletics | 2012 Summer, 2016 Summer | |
| Igor Zemlyanoy | Kazakhstan | Ice hockey | 1998 Winter | |
| Merouane Zemmama | Morocco | Football | 2004 Summer | |
| Morad Zemouri | Qatar | Judo | 2016 Summer | |
| Lovro Žemva | Yugoslavia | Cross country skiing | 1936 Winter | |
| Tomaž Žemva | Slovenia | Biathlon | 1998 Winter | |
| Moez Zemzemi | Tunisia | Boxing | 2000 Summer | |
| Hirotaka Zendana | Japan | Field hockey | 2020 Summer | |
| Zeng Bo | China | Road cycling | 1984 Summer | |
| Cem Zeng | Turkey | Table tennis | 2008 Summer | |
| Zeng Chunlei | China | Volleyball | 2012 Summer | |
| Zeng Guoqiang | Weightlifting | 1984 Summer | |
| Zeng Jian | Singapore | Table tennis | 2024 Summer | |
| Laura Zeng | United States | Rhythmic gymnastics | 2016 Summer, 2020 Summer | |
| Zeng Qiliang | China | Swimming | 1996 Summer | |
| Zeng Shaoxuan | Tennis | 2008 Summer | |
| Zeng Wenhui | Skateboarding | 2020 Summer, 2024 Summer | |
| Zeng Xiaoye | Snowboarding | 2010 Winter | |
| Zeng Xiujun | Athletics | 2000 Summer | |
| Zeng Zhen | Artistic swimming | 2016 Summer | |
| Zhiying Zeng | Chile | Table tennis | 2024 Summer | |
| Walter Zenga | Italy | Football | 1984 Summer | |
| Julian Zenger | Germany | Volleyball | 2024 Summer | |
| İbrahim Zengin | Turkey | Wrestling | 1956 Summer | |
| Slimane Zengli | Algeria | Boxing | 1988 Summer, 1992 Summer | |
| Aldo Zenhäusern | Switzerland | Ice hockey | 1976 Winter | |
| Ramon Zenhäusern | Alpine skiing | 2014 Winter, 2018 Winter, 2022 Winter | |
| Mariola Zenik | Poland | Volleyball | 2008 Summer | |
| Hans-Joachim Zenk | East Germany | Athletics | 1972 Summer | |
| Ali Al-Zenkawi | Kuwait | 2004 Summer, 2008 Summer, 2012 Summer | |
| Elena Zennaro | Italy | Swimming | 1956 Summer, 1960 Summer | |
| Matteo Zennaro | Fencing | 2000 Summer | |
| Silvia Zennaro | Sailing | 2016 Summer, 2020 Summer | |
| Christin Zenner | Germany | Swimming | 2008 Summer | |
| Kevin Zenón | Argentina | Football | 2024 Summer | |
| Eduard Zenovka | Unified Team, Russia | Modern pentathlon | 1992 Summer, 1996 Summer | |
| Therese Zenz | Saar, Germany | Canoe sprint | 1952 Summer, 1956 Summer, 1960 Summer | |
| Roza Zenziveyeva | Soviet Union | Swimming | 1952 Summer | |
| Gustavo Zepeda | Mexico | Shooting | 1968 Summer | |
| Omar Zepeda | Athletics | 2012 Summer, 2016 Summer | |
| Jean-Luc Zephir | Saint Lucia | Swimming | 2020 Summer | |
| Zhou Zeqi | China | Taekwondo | 2024 Summer | |
| Eda Zeqiri | Kosovo | Swimming | 2020 Summer | |
| Rita Zeqiri | 2016 Summer | |
| Xavier Zequeira | Puerto Rico | Shooting | 1960 Summer | |
| Ivo Žerava | Czechoslovakia | Rowing | 1992 Summer | |
| Nicolás Zerba | Argentina | Volleyball | 2024 Summer | |
| Volker Zerbe | Germany | Handball | 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer | |
| Michael Zerbes | East Germany | Athletics | 1968 Summer | |
| Luciano Zerbini | Italy | 1984 Summer, 1992 Summer | |
| Christoph Zerbst | Austria | Rowing | 1992 Summer, 1996 Summer | |
| Emmanouil Zerdevas | Greece | Water polo | 2020 Summer, 2024 Summer | |
| Aleksandrs Žerebkovs | Latvia | Weightlifting | 1992 Summer | |
| Thomas Zereske | East Germany, Germany | Canoe sprint | 1988 Summer, 1996 Summer, 2000 Summer | |
| Reinhard Zerfowski | East Germany | Rowing | 1968 Summer | |
| Antar Zerguelaïne | Algeria | Athletics | 2008 Summer | |
| Al Zerhusen | United States | Football | 1956 Summer | |
| Michele Zerial | Italy | Canoe sprint | 2008 Summer | |
| Abebe Zerihun | Ethiopia | Athletics | 1980 Summer | |
| Danilo Žerjal | Yugoslavia | 1948 Summer | |
| Neža Žerjav [ Wikidata ] | Slovenia | Cross country skiing | 2022 Winter | |
| Monsef Zerka | Morocco | Football | 2004 Summer | |
| Pia Zerkhold | Austria | Snowboarding | 2022 Winter | |
| Mirosław Żerkowski | Poland | Athletics | 1980 Summer | |
| Augustos Zerlendis | Greece | Tennis | 1920 Summer, 1924 Summer | |
| Paul Zerling | Sweden | Athletics | 1912 Summer | |
| Monika Zernicek | East Germany | Speed skating | 1976 Winter | |
| Oleg Zernikel | Germany | Athletics | 2020 Summer, 2024 Summer | |
| Bouchaib Zeroual | Morocco | Shooting | 1960 Summer | |
| Larbi Zéroual | Athletics | 1996 Summer | |
| Klaus Zerta | Germany | Rowing | 1960 Summer | |
| Alexandra Zertsalova | Kyrgyzstan | Swimming | 2000 Summer | |
| José Luis Zertuche | Mexico | Boxing | 2000 Summer | |
| Haile Zeru | Ethiopia | Athletics | 1980 Summer | |
| Georgios Zervinis | Greece | Wrestling | 1924 Summer, 1928 Summer, 1932 Summer | |
| Zhang Zesen [ Wikidata ] | China | Ice hockey | 2022 Winter | |
| Steffen Zesner | East Germany, Germany | Swimming | 1988 Summer, 1992 Summer, 1996 Summer | |
| Linda Zetchiri | Bulgaria | Badminton | 2016 Summer, 2020 Summer | |
| Julie Zetlin | United States | Rhythmic gymnastics | 2012 Summer | |
| Kathrin Zettel | Austria | Alpine skiing | 2006 Winter, 2010 Winter, 2014 Winter | |
| Bertz Zetterberg | Sweden | Ice hockey | 1956 Winter | |
| Henrik Zetterberg | 2002 Winter, 2006 Winter, 2010 Winter, 2014 Winter | |
| Yoko Zetterlund | United States | Volleyball | 1992 Summer, 1996 Summer | |
| Olle Zetterstrom | Cross country skiing | 1932 Winter | |
| Brighton Zeuner | Skateboarding | 2020 Summer | |
| Daryna Zevina | Ukraine | Swimming | 2012 Summer, 2016 Summer, 2020 Summer | |
| Hailu Zewde | Ethiopia | Athletics | 1992 Summer | |
| Abdullah Abdulrahman Zeyab | Kuwait | Swimming | 1972 Summer | |
| Mouda Zeyada | Egypt | Equestrian jumping | 2020 Summer | |
| Méba-Mickaël Zeze | France | Athletics | 2016 Summer, 2020 Summer, 2024 Summer | |
| Ryan Zeze | 2020 Summer, 2024 Summer | |
| Jared Zezel | United States | Curling | 2014 Winter | |
| Lidia Zgajewska | Poland | Field hockey | 1980 Summer | |
| Mihael Žgank | Slovenia, Turkey | Judo | 2016 Summer, 2020 Summer, 2024 Summer | |
| Dariya Zgoba | Ukraine | Artistic gymnastics | 2008 Summer | |
| Mohamed Zguir | Tunisia | Football | 1960 Summer | |
| Marina Zgurscaia | Moldova | Shooting | 2012 Summer | |