Fightin' Marines was a bimonthly war comic magazine published by St. John Publications from 1951–1953, and Charlton Comics from 1955–1984, although it was primarily a reprint title from 1978 to the end of its run. Telling fictional stories of the United States Marine Corps, it was a sister title of the other Charlton war comics Fightin' Air Force, Fightin' Army, and Fightin' Navy.

War comics is a genre of comic books that gained popularity in English-speaking countries following World War II.