The Harmon Trophy is a set of three international trophies, to be awarded annually to the world's outstanding aviator, aviatrix, and aeronaut. A fourth trophy, the "National Trophy," was awarded from 1926 through 1938 to the most outstanding aviator in each of the twenty-one member countries and again from 1946–1948 to honor Americans who contributed to aviation. The award was established in 1926 by Clifford B. Harmon, a wealthy balloonist and aviator.

Clifford Burke Harmon was a wealthy American real estate developer and founding partner of Wood, Harmon & Co., as well as a noted early amateur aviator.