Kosman is a surname. Notable people with the surname include:
Admiel Kosman (born 1957), Israeli poet and Talmudist Aryeh Kosman (1935–2021), American philosopher Henry Kosman (1913–1984), American politician from Nebraska Joshua Kosman (born 1959), American music critic Marceli Kosman (1940–2023), Polish historian Mike Kosman (1917–2002), American baseball player
See also Kosman String Quartet Kossmann