Pennsylvania's 34th congressional district was one of Pennsylvania's districts of the United States House of Representatives. It covered area north of the city of Pittsburgh, Pennsylvania.

This district was created in 1913. Until 1923 the seat was held "at-large". The district was eliminated in 1943.

Member	Party	Years	Cong ress	Electoral history
District established March 4, 1923
John M. Morin (Pittsburgh)	Republican	March 4, 1923 – March 3, 1929	68th 69th 70th	Redistricted from the 31st district and re-elected in 1922. Re-elected in 1924. Re-elected in 1926. Lost renomination.
Patrick J. Sullivan (Pittsburgh)	Republican	March 4, 1929 – March 3, 1933	71st 72nd	Elected in 1928. Re-elected in 1930. Lost renomination.
Matthew A. Dunn (Pittsburgh)	Democratic	March 4, 1933 – January 3, 1941	73rd 74th 75th 76th	Elected in 1932. Re-elected in 1934. Re-elected in 1936. Re-elected in 1938. Retired due to poor health.
James A. Wright (Carnegie)	Democratic	January 3, 1941 – January 3, 1943	77th	Elected in 1940. Redistricted to the 32nd district.
District dissolved January 3, 1943

• Martis, Kenneth C. (1989). The Historical Atlas of Political Parties in the United States Congress. New York: Macmillan Publishing Company.
• Martis, Kenneth C. (1982). The Historical Atlas of United States Congressional Districts. New York: Macmillan Publishing Company.
• Congressional Biographical Directory of the United States 1774–present

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