Sergeant Frederick William Mausert III (May 1, 1930 – September 12, 1951) was a United States Marine who earned the Medal of Honor in Korea for sacrificing his life after repeated acts of heroism. The nation’s highest military decoration for valor was awarded the young Marine for his extraordinary heroism during the Battle of the Punchbowl on September 12, 1951, at Songnap-yong, where he was killed while leading an assault on enemy positions. He was the 20th Marine to receive the Medal of Honor for heroism during the Korean War.