John Arne Sæterøy (born 16 May 1965), better known by the pen name Jason, is a Norwegian cartoonist, known for his sparse drawing style and silent, anthropomorphic animal characters.

He has been nominated for two Ignatz Awards (2000: Outstanding Story and Outstanding Series, 2001: Outstanding Story and Outstanding Series), has received praise in Time, and won the Harvey Award for best new talent in 2002, and several Eisner Awards.