Bennion is a surname from the Welsh "ab Einion". Notable people with the surname include:
Alan Bennion (1930–2018), actor, portrayed Ice Lords in Doctor Who Chris Bennion (born 1980), Scottish-born footballer, who has mainly played for clubs in Ireland Francis Bennion (1923–2015), English barrister and author of texts on statutory interpretation Fred Bennion (1884–1960), American college sports coach Lowell L. Bennion (1907–1996), American educator Mervyn S. Bennion (1887–1941), American naval officer who died at Pearl Harbor Milton Bennion (1870–1953), American educator Phil Bennion (born 1954), British politician Ray Bennion (1896–1968), Welsh footballer Sam Bennion (1871–1941), British footballer Stan Bennion (1938–2013), British footballer