Karl Gass (2 February 1917, Mannheim, Grand Duchy of Baden – 29 January 2009) was a German documentary filmmaker. With over 120 films, he was among the most productive documentary directors of the GDR, and is considered a leading master of DEFA documentaries. He had the idea for the DEFA long term documentary "Die Kinder von Golzow" (The children of Golzow). He was born in Mannheim and died in Kleinmachnow, aged 91.