Korn is a German surname of Jewish origin. Notable people with the surname include:
Alejandro Korn (1860–1936), Argentine physician, psychiatrist, philosopher and politician
Arthur Korn (1870–1945), German physicist, mathematician and inventor
Arthur Korn (architect) (1891–1978), German architect and urban planner
David Korn (computer scientist) (born 1943), American computer scientist
David A. Korn (1930–2022), American diplomat and writer
Dieter Korn (born 1958), German paleontologist
Jim Korn (born 1957), American ice hockey player
Jiří Korn (born 1949), Czech singer-songwriter
M. F. Korn, American writer
Marian Korn (1914–1987), Czech-American printmaker
Theresa Marie Korn (1926–2020), American engineer
Walter Korn (1908–1997), Czech-born American author of chess books