Trygve Johannessen (born 11 January 1953) is a Norwegian former professional footballer who played as a forward.

Viking paid somewhat less than 40,000 kr for the player, at a time when money was seen as taboo in Norwegian football.

Johannessen played well to hold his place in the team, and was for many years Viking's top scorer.

He won his fifth title with the club and together with Ham-Kam's Tor Arne Granerud he was top scorer with eleven goals.

He made his international debut with the Norway national team against the Soviet Union on 24 September 1975.