Gérard Blitz (1 August 1901 – 8 March 1979) was a Belgian Olympic swimmer and water polo player who competed at the 1920, 1924, 1928 and 1936 Olympics. He was the younger brother of Maurice Blitz, also a water polo player, and uncle of Gérard Blitz who founded Club Med in 1950.
Alfred Nakache (1915–1983) was a Jewish French swimmer and water polo player. A member of the French team for the 1936 Berlin Summer Olympic Games, he also swam in the first post-war Summer Olympics in London in 1948. He and Ben Helfgott are the only known Jewish athletes to have competed in the Olympics after surviving the Holocaust.