Arve Opsahl (14 May 1921 – 29 April 2007) was a Norwegian movie and stage actor, singer and stand-up comedian.
Opsahl began his career as a comedian in 1942, and played numerous roles both on stage and in more than forty movies.
He was then chosen to be the head of Olsenbanden, Egon Olsen.
He played Egon Olsen in the first movie in 1969, and in all other 13 movies, until the last one in 1999.
He is also well known for his role as the old man "Henry" in the Norwegian sitcom Mot i brøstet, airing from 1993-1997.
He reprised the role for the reunion film "Tusenårsfesten" in 1999.