Leon Sacks (October 7, 1902 – March 11, 1972) was an American lawyer and politician who served three terms as a Democratic member of the U.S. House of Representatives from Pennsylvania from 1937 to 1943.

Leon Sacks was born in Philadelphia, Pennsylvania, the son of Russian-Jewish immigrants.

He was appointed deputy Attorney General of Pennsylvania in February 1935 and served until January 1937.

He was elected as a member of the Democratic State committee in 1936 and served until 1942.

Sacks served at Army Air Forces Eastern Flying Training Command, with the rank of lieutenant colonel, from January 4, 1943, to January 10, 1946, when resumed the practice of his profession.