William R. Jecelin (May 6, 1930 – September 19, 1950) was a soldier in the United States Army who posthumously received the United States military's highest decoration for bravery, the Medal of Honor, for his actions during the Korean War. He was born and joined the Army from Baltimore, Maryland and was sent as a Sergeant to fight in the Korean War. While there he was fighting with Company C, 35th Infantry Regiment during the Pusan Perimeter Offensive when a grenade was thrown at them Jecelin sacrificed himself to save the other soldiers in his unit. He covered the grenade with his body and was killed. His body was returned to the US and buried in his hometown of Baltimore.