Olympiacós Sýndesmos Filáthlon Peiraiós is a major multi-sport club based in Piraeus, Greece. Olympiacos is parent to a number of different competitive departments which participate in football, basketball, volleyball, water polo, handball, athletics, swimming, table tennis and boxing amongst many others—and have won numerous European and domestic titles over the club's history.
Olympiacos Men's Waterpolo, commonly referred to as Olympiacos, Olympiacos Piraeus or with its full name as Olympiacos CFP, is the professional men's water polo department of the major Greek multi-sport club, Olympiacos CFP, based in Piraeus, Greece. The department was founded in 1925, one of the founding members of the Hellenic Swimming Federation, and their home ground is the Papastrateio Pool in Piraeus.
Theodoros "Thodoris" Chatzitheodorou is a retired Greek water polo player and current coach.
Andro Bušlje is a Croatian water polo player who competed in the 2008 Summer Olympics, 2012 Summer Olympics and 2016 Summer Olympics. At the 2012 Summer Olympics he was part of the Croatian team that won the gold medal. He is right-handed and plays the center defender position. From 2016 to 2019 he played for Greek powerhouse Olympiacos, with whom he won the 2017–18 LEN Champions League. He started playing water polo at the age of 12, and he made his national team debut in 2005. Bušlje is one of the top defenders in the world.
Josip Pavić is a Croatian water polo player who competed in the 2008, 2012 and 2016 Summer Olympics, winning the gold medal in 2012 and the silver in 2016. He was widely regarded as the best goalkeeper in the 2012 Olympic tournament. He was named the best world water polo player in 2012, by FINA.
Anastasios Schizas is a Greek retired water polo player who competed in the 2004 Summer Olympics and the 2008 Summer Olympics. Schizas was part of the Greece men's national water polo team that won the Bronze Medal in the 2005 World Championship in Montreal and the Bronze Medal in the 2004 World League in Long Beach.
Theodoros "Thodoris" Kalakonas is a Greek water polo player who competed in the 1996 Summer Olympics, and in the 2004 Summer Olympics with the Greece men's national water polo team. He was part of the national squad that won the silver medal at the 1997 World Cup in Athens and the Bronze Medal in the 2004 World League in Long Beach.
Antonios "Antonis" Vlontakis is a retired Greek water polo player. A long-standing member of the Greece national water polo team, Vlontakis competed in the 2000 Summer Olympics, the 2004 Summer Olympics, and the 2008 Summer Olympics. He was part of the Greece men's national water polo team that won the Bronze Medal in the 2005 World Championship in Montreal and the Bronze Medal in the 2004 World League in Long Beach.
Nikolaos "Nikos" Deligiannis is a Greek former water polo player who competed in the 2000 Summer Olympics, the 2004 Summer Olympics, the 2008 Summer Olympics and the 2012 Summer Olympics with the Greece men's national water polo team. He was also part of the Greece national squad who won the Bronze Medal in the 2005 World Championship in Montreal and the Bronze Medal in the 2004 World League in Long Beach.
Ioannis Thomakos is a Greek water polo player who competed in the 2000 Summer Olympics, the 2004 Summer Olympics and the 2008 Summer Olympics with the Greece men's national water polo team. He was part of the national squad that won the silver medal at the 1997 World Cup in Athens. and the Bronze Medal in the 2004 World League in Long Beach.
Georgios Psykhos is a Greek former water polo player who competed in the 1996 Summer Olympics, the 2000 Summer Olympics with the Greece men's national water polo team. He was part of the Greece national team that won the silver medal at the 1997 World Cup in Athens.
Gerasimos "Makis" Voltirakis is a Greek retired water polo player and current water polo coach. Voltirakis was a member of Greece men's national water polo team from 1991 to 1997, with whom he competed in the 1992 Summer Olympics and in the 1996 Summer Olympics. He was part of the Greece men's national water polo team that won the silver medal at the 1997 World Cup in Athens, being voted the tournament's best goalkeeper.
Evangelos Ioannis Delakas is a retired Greek water polo player and the current assistant coach of Greek powerhouse Olympiacos. As a player, Delakas won a bronze medal at the 2015 World Championships and competed at the 2012 and 2016 Olympics. He played for Olympiacos for 14 years (2004–2018) and won 12 Greek Championships, 11 Greek Cups and the 2017–18 LEN Champions League with the club.
Ioannis Fountoulis is a Greek professional water polo player. He is currently the captain of Greece men's national water polo team, with whom he won a bronze medal at the 2015 World Championships, a bronze medal at the 2016 World League, 2020 World League and competed at the 2012 and 2016 Olympics. He played for the Greek powerhouse Olympiacos since 2009, and in 2018 he won the 2017–18 LEN Champions League with the Greek giants, scoring 4 goals in the final game against Pro Recco in Genoa. Is a very big scorer and leader is considered one of the top players in the world and it is typical how in 2016 and 2018 he was voted as the second top player in the world. Currently playing for the Greek club Olympiacos.
Konstantinos Mourikis is a Greek water polo player. He was part of the Greek team that won the bronze medal at the 2015 World Championship and the bronze medal at the 2016 World League and 2020 World League
Paulo Obradović is a Croatian water polo player. At the 2012 Summer Olympics, he competed for the Croatia men's national water polo team in the men's event, where they won the gold medal. He is 6 ft 3 inches tall. At club level, he played for Greek powerhouse Olympiacos, with whom he won the 2017–18 LEN Champions League.
Olympiacos Women's Water Polo Club is the women's water polo department of the major Greek multi-sport club Olympiacos, based in Piraeus. The department was founded in 1988 and they play their games at the 1000-seated Papastrateio "Petros Kapagerof" Pool in Piraeus.
Theodoros "Thodoris" Vlachos is a retired Greek water polo player and the current coach of the Greece men's national water polo team. He was named the Greek Coach of the Year, for the years 2021 and 2023.
Georgios Dervisis is a Greek water polo player. He was part of the Greek team winning the bronze medal at the 2015 World Aquatics Championships.
Konstantinos Genidounias is a Greek water polo player. He was part of the Greek team that won the bronze medal at the 2015 World Aquatics Championships. Genidounias is considered one of the top scorers in the world. His top personal distinction is when he became the top scorer of the Champions League 2018–19 season as he scored 42 goals while in the same year he emerged ninth top player in the world.
Greece 
