Marcel Gery (in Czech and Slovak Marcel Géry; born March 15, 1965) is a former butterfly swimmer, who was born in Czechoslovakia and competed for the Czechoslovak national team in international competitions. At the 1985 Summer Universiade, Gery won a bronze medal in the 200-metre freestyle. He later emigrated to Canada and competed for the Canadian national team at the 1992 Summer Olympics in Barcelona, Spain. There he won bronze medal with the men's 4×100-metres medley relay team, alongside Mark Tewksbury, Jonathan Cleveland and Stephen Clarke.