Gregor Keane Duncan (February 12, 1910–May 28, 1944) was an American artist who specialized in pen-and-ink drawings for magazines, books and newspapers.
Charles Duncan wore many hats during his career, working as a designer and illustrator, as well as the press agent for Joseph Strauss, the chief engineer on the Golden Gate Bridge.
Duncan left Tamalpais High School before graduating, and started on the staff of the Sausalito News when he was 17 years old.
Duncan joined the staff of Stars and Stripes on December 14, 1943, and was shipped to Algiers to work on the Mediterranean edition of the military paper.
His work in Stars and Stripes consisted of everything from field studies to comic strips and included numerous courtroom drawings from the war crimes trials of the Vichy Government.