Walter Edwin Lees (July 16, 1887 – May 16, 1957) was an early American aviator who set a flight endurance record in 1931.

He joined the Army Air Service as a civilian flying instructor in 1917, and married Loa Lloyd.

He also worked as a mechanic in the Army Air Service at Wright Field between 1919 and 1920.

[1] He and Frederick Brossy made a world's non-refueling duration record at Jacksonville Beach, Florida, in 1931 with a flight time of 84 hours and 32 minutes in a Bellanca J2 Diesel.

He was active in aviation for over 35 years and flew approximately 12,000 hours, in over 60 different types of planes.