Italy competed at the 1996 Summer Olympics in Atlanta, United States. 340 competitors, 236 men and 104 women, took part in 172 events in 27 sports.
Jason Edward Lezak is an American former competitive swimmer and swimming executive. As a swimmer, Lezak specialized in the 50-meter and 100-meter freestyle races. His pro career lasted for nearly fifteen years, spanning four Olympic games and eight Olympic medals.
Emanuele Merisi is an Italian former professional swimmer, specialized in backstroke, who won a bronze medal in the 1996 Summer Olympics.
Ford Hiroshi Konno is a Japanese–American former competition swimmer, two-time Olympic champion, and former world record-holder in three events.
Douglas Dale Northway is an American former swimmer, who represented the United States at two consecutive Olympic Games.
James Price McLane Jr. was an American competition swimmer, three-time Olympic champion, and a world record-holder.
Piermaria Siciliano is a retired freestyle swimmer from Italy, who represented his native country at two consecutive Summer Olympics: 1992 and 1996. He won the bronze medal in the men's 4×200 m freestyle at the 1995 European Aquatics Championships, alongside Massimiliano Rosolino, Emanuele Merisi, and Emanuele Idini.
Pua Kele Kealoha was an American competition swimmer, Olympic champion, and former world record-holder. He was not related to Olympic swimming champion Warren Kealoha.
George Harold Kojac was an American competition swimmer, two-time Olympic champion, and former world record-holder in two events.
Jack Chapman Medica was an American competition swimmer, Olympic champion, and former world record-holder in two events.
Jane Louise Barkman, also known by her married name Jane Brown, is an American former swimmer, two-time Olympic champion, and former world record-holder.
Nikita Konstantinovich Lobintsev is a Russian freestyle swimmer, who won the silver medal in the 4 × 200 m freestyle relay at the 2008 Summer Olympics. At that Olympics, he also competed in the 400 m freestyle, finishing in 8th, and the 1500 m freestyle, finishing in 31st.
Daniel Ploug Jorgensen is an American former competition swimmer who represented the United States at two consecutive Olympic Games.
Joel Ladd Thomas is an American former competition swimmer and Olympic gold medalist.
San Marino competed at the 2012 Summer Olympics in London, which was held from 27 July to 12 August 2012. The country's participation at London marked its thirteenth appearance in the Summer Olympics since its début at the 1960 Summer Olympics. The delegation sent by the Sammarinese National Olympic Committee consisted of four athletes: sprinter Martina Pretelli, archer Emanuele Guidi, trap shooter Alessandra Perilli and short-distance swimmer Clelia Tini.
The Marshall Islands marked its second consecutive Olympiad, at the 2012 Summer Olympics in London, from July 27 to August 12, 2012. The Olympian delegation included two men and two women, one male and one female athlete in athletics and one male and one female athlete in swimming. Middle-distance runner Haley Nemra was honored as the national flag bearer at the opening ceremony. The Marshall Islands continued their streak of bringing home no medals.
Pernille Blume is a former Danish swimmer specializing in sprint freestyle events. She competed at the 2012 Summer Olympics. At the 2016 Summer Olympics she was the gold medalist in the women's 50 metre freestyle and won a bronze medal in the women's 4 × 100 metre medley relay where she swam the freestyle leg of the relay in both the prelims and the final. She also competed at the 2020 Summer Olympics, winning a bronze medal in the 50 metre freestyle.
Florent Manaudou is a French competitive swimmer, an Olympic champion of the 50-meter freestyle at the 2012 London Olympics, and the younger brother of Laure Manaudou, a 2004 Olympic gold medalist in swimming. He currently holds the world record in the 50-meter backstroke. He competes for the Energy Standard Swim Club in the International Swimming League.
Andrew Edward Strenk is an American former competition swimmer and Pan American Games medalist.
Emanuele Nicolini is a Sammarinese swimmer, who specialized in freestyle events. He holds numerous national records in the 200 and 400 m freestyle, and had represented his nation San Marino in two editions of the Olympic Games.
Italy 
