Ture John Gunnar Pettersson (1919–2000) was a Swedish painter and illustrator. Born in Gothenburg, he was the son of Fritz August Pettersson and Gulli Augusta Karlsson, and in 1946 he married Frida Charlotta Pettersson. Pettersson studied art at Valand’s painting school in the late 1950s.

He exhibited with Georg Andersson and Bror Göransson at Olsen’s art salon in Gothenburg in 1949 and was represented in Konstfrämjandet exhibitions in Borås and Eskilstuna (1949) and Ulricehamn (1950). His work encompassed figure motifs, still lifes, and landscapes in oil, alongside book covers and illustrations for the magazine press, reflecting a versatile engagement with both fine art and applied graphics.