Ernest Ivy Boots Thomas Jr. (March 10, 1924 - March 3, 1945) was a United States Marine Corps platoon sergeant who was killed in action during the Battle of Iwo Jima in World War II. He was awarded the Navy Cross for extraordinary heroism while fighting for and at the base of Mount Suribachi. Two days later he was a member of the patrol that captured the top of Mount Suribachi where he helped raise the first U.S. flag on Iwo Jima on February 23, 1945. He was killed eight days after that.