Karl Feoder Sim, also known as CF Goldie (Born 6 December 1923, Mangaweka – Died 21 October 2013, North Shore Hospital) was a New Zealand art forger.
He copied and sold paintings and drawings of such artists as Frances Hodgkins, Colin McCahon, and Charles F Goldie, in his antique and wine shop in Foxton. By signing the artist's name on the pictures, he sold them as original, genuine pieces of art. He was arrested in the 1980s and fined $1,000. Afterward he changed his name to Carl Feoder Goldie, so he could sign pictures as CF Goldie. He was guest of honor at the inaugural 'Mangaweka Fakes & Forgeries Festival' held in 2007 in his birth town. He appeared again as prize presenter in 2011 at the now two yearly event, and was planned to appear at the 2013 event in November, before his death in October of that year.