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 Soul-Ryder Tellefsen (2008-