Tellefsen is a Norwegian surname.
Arne Tellefsen (1891–1973), Norwegian Olympic athlete
Arve Tellefsen (1936-), Norwegian violinist
Carl Tellefsen (1854-1908), Norwegian-American skiing champion
Christopher Tellefsen (born 1957), American film editor
Rut Tellefsen (born 1930), Norwegian actress
Thomas Tellefsen (1823–1874), Norwegian composer and pianist
Tom Tellefsen (1931–2012), Norwegian actor
