Kjetil Traavik Møster (born 17 June 1976 in Bergen, Norway) is a Norwegian Jazz musician (tenor and soprano saxophones, clarinet and bass clarinet) and composer. Having made his mark with experimental performances at the interface between electronic based rock, improv and jazz, he has performed with the likes of Håvard Wiik, Paal Nilssen-Love, Jon Christensen, Mats Eilertsen, Fredrik Ljungkvist, Per ”Texas” Johansson, Håkon Kornstad, Raymond Strid, Mike Pride, Michael Zerang, Josh Berman, Nate Wooley, Ivar Grydeland, Bjørnar Andresen, Bjørnar Habbestad, Ketil Gutvik. Together with Maja S.K. Ratkje, Paal Nilssen-Love and Lasse Marhaug, he started the festival «All Ears» in 2002.

"Møster is a master of integrating electronics with his instruments in organic ways that render the use of the term "effects" both irrelevant and incorrect. Artists like Møster don't use electronics for effect; they use them to expand the palettes of their instruments, and integrate them so seamlessly as to make the result sound less like an instrument with electronics added and more an entirely new instrument." - John Kelman, All About Jazz