Erkki Mauno Gustaf Manninen, born 26 June 1915 in Helsinki, Grand Duchy of Finland, died 14 September 1969 in Kangasniemi, Finland, was a Finnish poet, painter and theatre director. He was the son of poet Otto Manninen and writer Anni Swan. Manninen is best known as the founder of , which was one of the leading theatres in Helsinki from 1949 to 1987.