Joseph Oswald Mauborgne (February 26, 1881 – June 7, 1971) co-invented the one-time pad with Gilbert Vernam of Bell Labs.

After graduating in 1901 from the College of Saint Xavier in New York, he studied fine arts until commissioned a 2d Lieutenant, Infantry, in the regular Army in 1903.

Just a few months after he retired (September 30, 1941), two Signal Corps soldiers — using an SCR-270 radar at Oahu, Hawaii, in the early morning of December 7, 1941 — spotted Japanese aircraft on their way in to attack Pearl Harbor.

Portraits and etchings produced by Mauborgne were exhibited in galleries in Washington, San Francisco, and Dayton, Ohio; acquired by the United States Military Academy, and sold to private collections.

During his early career, Mauborgne was a recognized marksman, on the "Distinguished Shooters" list of the Civilian Marksmanship Program.

He was largely responsible for the high type of radio equipment developed for the American Army and rendered unusual service in connection with cipher telegraphy.