Lloyd Eugene Mangrum (August 1, 1914 – November 17, 1973) was an American professional golfer.

While serving in the U.S. Army and training for deployment in the European Theater, Mangrum was offered the professional's job at the Fort Meade golf course in Maryland, which would have kept him out of combat, but he declined.

He was assigned to the 90th Infantry Division Reconnaissance Troop and was injured in a jeep accident near Falaise on August 21, 1944.

He lost a playoff for the 1950 U.S. Open at Merion to Ben Hogan and his famous one-iron.

[1] Mangrum was called "the forgotten man of golf" by sportswriter Jim Murray.

Even though only 12 men have won more PGA Tour events, his reputation has been overshadowed by the other stars of his era who lived long, extraordinary lives such as Sam Snead and fellow Texans Ben Hogan Jimmy Demaret and Byron Nelson.

A quarter century after his death, he was inducted into the World Golf Hall of Fame in 1998.