Rolv Helge Wesenlund (17 September 1936 – 18 August 2013) was a Norwegian comedian, singer, clarinetist, writer and actor.

Wesenlund was most famous for having portrayed the title character in the movies Bør Børson, Bør Børson II, and the TV series Fleksnes Fataliteter. Fleksnes is by far the most popular Scandinavian sitcom in history, with a huge number of fans in Sweden, Denmark and Norway. The show was mainly an adaption of the British series Hancock's Half Hour.