Floyd George Giebell (December 10, 1909 – April 28, 2004) was an American baseball player who is best remembered as the pitcher who, in his third career start, shut out Bob Feller and the Cleveland Indians to clinch the 1940 American League pennant for the Detroit Tigers of Major League Baseball (MLB). Listed at 6 feet 2 inches (1.88 m) and 172 pounds (78 kg), Giebell threw right-handed and batted left-handed.