Richard Earl Bush (December 23, 1924 – June 7, 2004) was a United States Marine master gunnery sergeant who received the Medal of Honor as a corporal for heroism on Okinawa during World War II. On April 16, 1945, Cpl. Bush placed himself on a thrown enemy grenade, absorbing the force of the explosion, saving the lives of his fellow Marines and corpsmen. In World War II, twenty-seven Marines similarly used their bodies against thrown enemy grenades in order to save their comrades' lives. Four of these Marines survived and were awarded the Medal of Honor — Richard Bush, Jacklyn H. Lucas, Carlton R. Rouh, and Richard K. Sorenson.