Edward Lewis Sittler, Jr. was a Republican member of the U.S. House of Representatives from Pennsylvania. Upon graduation Edward Lewis Sittler, Jr. began his career as an ice cream salesman. After a few years he was elected to the Uniontown School Board and then served as president of the school board.

From school board he became a field underwriter for Mutual Life Insurance Company of New York. In February 1943, he enlisted as a private in the United States Army. He served in the Ordnance Corps in the European Theatre of World War II until 1946.

Sittler returned to his hometown and became mayor of Uniontown from 1948 to 1951. In 1950, he was elected to the 82nd United States Congress in the Pennsylvania 23rd district. After his term on Capitol Hill, he served as Republican State committeeman for Fayette County, Pennsylvania from 1960 to 1972 and was the minority Fayette County Commissioner from 1968 to 1971.