Gassman is a surname. Notable people with the surname include:
Alessandro Gassman (born 1965), Italian actor David Gassman (born 1949), American politician Tedd Gassman (born 1943), American politician Vittorio Gassman (1922–2000), Italian theatre and film actor and director Paul G. Gassman (1935–1993), American chemist Paola Gassman (1945–2024), Italian actress
See also Gassman indole synthesis, indole forming reaction Gasman (disambiguation)