Guttorm Guttormsen (born 28 June 1950) is a Norwegian Jazz musician (flute, clarinet, alto saxophone), arranger and composer.

He attended Kongsberg Jazzfestival several times, also with his own quartet (1975, 1979), and «Guttorm Guttormsen/Per Kristian Ekholt Big Band» (1976).

He led his own Quintet, including with Lars Klevstrand, Jon Balke, Carl Morten Iversen, Espen Rud, releasing the album Høysang (1978).

Musical Director of «Teater Ibsen» and within Jon Eberson Quartet, Per Husby dedication orchestra (1984–1988) and contributed on albums by «Trio de Janeiro», and the release Distant Reports (2001) by «Nordnorsk Jazzforum».

He has been a studio musician for a number of Norwegian music productions and artists like Lars Klevstrand.