Manninen is a Finnish surname. Notable people with the surname include:
Hannes Manninen (born 1946), Finnish politician
Hannu Manninen (born 1978), Finnish Nordic combined athlete
Jarmo Manninen (born 1951), Finnish retired football player
Mauno Manninen (1915–1969), Finnish theatre director, poet and painter
Mikko Manninen (born 1985), Finnish professional football striker
Oskari Manninen (born 1991), Finnish ice hockey player
Otto Manninen (1872–1950), Finnish writer
Pirjo Manninen (born 1981), Finnish cross country skier
Raimo Manninen (athlete) (born 1955), Finnish retired javelin thrower
Raimo Manninen (alpine skier) (1940–2009), Finnish alpine skier
Uolevi Manninen (1937–2009), Finnish basketball player and businessman