Leon Harry Gavin (February 25, 1893 – September 15, 1963) was a Republican member of the U.S. House of Representatives from Pennsylvania.

Leon H. Gavin was born in Buffalo, New York, and moved to Oil City, Pennsylvania, in 1915.

He was a member of the State Board of Appeals of the Selective Service System, the executive secretary of the Oil City Chamber of Commerce, and a member of the National Migratory Bird Conservation Commission from 1958 to 1963.

[1] He was elected as a Republican to the 78th United States Congress and to the ten succeeding Congresses and served from January 3, 1943, until his death from a cerebral hemorrhage in Washington, D.C., on September 15, 1963.

Gavin voted in favor of the Civil Rights Acts of 1957 and 1960,[2][3] as well as the 24th Amendment to the U.S.