Walter Edward Truemper (October 31, 1918 – February 20, 1944) was a United States Army Air Forces officer in World War II and a recipient of the U.S. military's highest decoration, the Medal of Honor.

He and his crewmate, Staff Sergeant Archibald Mathies, were posthumously awarded the medal for attempting to save the life of their wounded pilot by staying aboard and trying to land their damaged aircraft.

On February 20, 1944, Truemper took part in a bombing mission over Leipzig, Germany, as a navigator aboard a B-17G Flying Fortress nicknamed Ten Horsepower (AAF Ser.

The remaining crewmen were able to fly the plane back to RAF Polebrook, at which point Truemper and the flight engineer, Sergeant Archibald Mathies, volunteered to stay aboard while the others parachuted to safety.

Truemper's official Medal of Honor citation reads: For conspicuous gallantry and intrepidity at risk of life above and beyond the call of duty in action against the enemy in connection with a bombing mission over enemy-occupied Europe on 20 February 1944.

Nevertheless, 2d Lt. Truemper and other members of the crew managed to right the plane and fly it back to their home station, where they contacted the control tower and reported the situation.