Jonas Kullhammar (September 2, 1978 in Nacka, Sweden) is a Swedish jazz composer, saxophonist and is one of Sweden's most established jazz musicians.
Since 1998 his main group has been Jonas Kullhammar Quartet, and he has participated on over 150 records as a sideman. In year 2000 he released his debut recording, the self-produced Salut. It won him Sweden Radio's Jazz Cat award as the newcomer of the year. He also received the Django D'or award and received the price Sweden Radio's Jazz Cat as Jazz Musician of The Year in Sweden two years in a row. The group also received the award for jazz group of the year. Since then the band has toured around the world and released more CDs. Jonas is also a founding member of the groups Kullrusk and Nacka Forum. Since 2000 he runs the record label Moserobie, that releases mainly Swedish and Norwegian jazz groups.
Kullhammar has worked with artists and bands The (International) Noise Conspiracy, Carlos Garnett, Nicolai Dunger, Fredrik Norén Band, The Torbjörn Zetterberg Hot Five, Sonic Mechatronik Arkestra, Peanuts Hucko, The Plan, Nina Ramsby, Goran Kajfes, Marcus Strickland, Eldkvarn, Jupiter Trio, The Core, Mulatu Astatke, Salem Al Fakir, The Hives, Ted Curson, Chick Corea, Jason Moran, Dungen, Rickie Lee Jones and many more.