Ohio's at-large congressional district
Ohio's at-large congressional district existed from 1803 to 1813, from 1913 to 1915, from 1933 to 1953 and from 1963 until 1967, when it was banned by the Voting Rights Act of 1965.
From statehood in 1803 until the 1813 redistricting following the 1810 census, Ohio had only one member of the United States House of Representatives: Jeremiah Morrow.
List of members representing the district
| Cong ress | Years | Member | Party | Electoral history | |
| October 17, 1803 – March 3, 1813 | Jeremiah Morrow | Democratic-Republican | Elected in 1803. Re-elected in 1804. Re-elected in 1806. Re-elected in 1808. Re-elected in 1810. Retired to run for U.S. Senator. | ||
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After the 1810 census, the at-large seat was eliminated. It was reinstated after the 1910 census.
| Cong ress | Years | Member | Party | Electoral history | |
| March 4, 1913 – March 3, 1915 | Robert Crosser | Democratic | Elected in 1912. Redistricted to the. | ||
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From the 1930 census to the 1940 census, there were two seats elected at-large, on a general ticket.
In 1953, the seat was eliminated. It was restored in 1963.
| Years | Cong ress | Member | Party | Electoral history | |
| January 3, 1963 – January 3, 1965 | Robert Taft Jr. | Republican | Elected in 1962. Retired to run for U.S. Senator. | ||
| January 3, 1965 – January 3, 1967 | Robert E. Sweeney | Democratic | Elected in 1964. Retired to run for Ohio Attorney General. |
In 1967, the at-large district was eliminated.