Irving Goff (1911 - 17 May 1989) was a member of the Communist Party USA and the Abraham Lincoln Battalion, a unit that volunteered to fight during the Spanish Civil War for the Popular Front. During World War II, he was a member of the American Office of Strategic Services, and was instrumental in setting up guerrilla units working behind enemy lines in North Africa and Italy. His exploits as a guerrilla in Spain are considered to be the inspiration for Ernest Hemingway's novel For Whom the Bell Tolls.