Ismar is a masculine given name. Notable people with this name include:
Ismar Biogradlić (born 1974), Bosnian luger Ismar David (1910–1996), artist Ismar Elbogen (1874–1943), German rabbi, scholar, and historian Ismar Gorčić (born 1983), Bosnian tennis player Ismar Hairlahović (born 1996), Bosnian footballer Ismar Isidor Boas (1858–1938), German gastroenterologist Ismar Schorsch, professor Ismar Tandir (born 1995), German and Bosnian footballer Ismar Volić, Bosnian-American mathematician