Ketil Hvoslef (né Ketil Sæverud; born 19 July 1939 in Bergen, Norway) is a Norwegian composer. He is the son of composer Harald Sæverud. Hvoslef studied viola and organ at the Bergen Music Conservatory (now a part of Grieg Academy) graduating in 1962. He furthered his studies in Stockholm with Karl-Birger Blomdahl and Ingvar Lidholm, then in London with Thomas Rajna and Henri Lazarof. He taught music theory and ear training at the Bergen Music Conservatory (1963–1979).