Opsahl is a Norwegian surname. Notable people with the surname include: Allan Opsahl (1924–1990), American ice hockey defenseman Arve Opsahl (1921–2007), Norwegian movie and stage actor, singer and stand-up comedian Bjørn Opsahl (1968–2025), Norwegian photographer, director and lecturer Carl Petter Opsahl (born 1964), Norwegian priest, jazz musician and journalist Haakon Opsahl (1905–2001), Norwegian and Canadian chess player Johan Opsahl (1866–1933), Norwegian politician Morten Opsahl (born 1955), Norwegian sprint canoer Sakarias Opsahl (born 1999), Norwegian footballer Torkel Opsahl (1931–1993), Norwegian human rights scholar