Bjørn Kjellemyr (born 4 December 1950 in Bamble, Norway) is a Norwegian Jazz musician (double bass), known from a variety of musical contexts like Terje Rypdal & The Chasers, Joe Henderson, Bob Berg, Chet Baker, Art Farmer, Pat Metheny, Mike Stern, Dag Arnesen, Knut Riisnæs, Jon Eberson, Bugge Wesseltoft, Audun Kleive, Jon Balke, Jan Gunnar Hoff and Ketil Bjørnstad.