Mohn is a surname. The word in German means "poppy". Notable people with the surname include:
Albert Henrik Mohn (1918–1999), Norwegian journalist Bill Mohn (1899–1952), American football player Christian Mohn (1926–2019), Norwegian ski jumper and sports official Ellef Mohn (1894–1974), Norwegian football player Emanuel Mohn (1842–1891), Norwegian educator Henrik Mohn (1835–1916), Norwegian astronomer and meteorologist Jakob Mohn (1838–1882), Norwegian statistician Justin Mohn, creator of a reported 2024 beheading video Leo Mohn (1925–1980), American politician Lothar Mohn (born 1954), German choral conductor Liz Mohn (born 1941), widow of Reinhard Mohn Louise Mohn (born 1974), Norwegian entrepreneur Per Mohn (born 1945), Norwegian politician Petra Mohn (1911–1996), Norwegian politician Reinhard Mohn (1921–2009), German businessman Sigfrid Mohn (1930–2015), Norwegian politician Trond Mohn (born 1943), Norwegian businessperson and philanthropist
See also Rieber-Mohn, a surname Mohns, a surname