Places beginning with UN in Ohio, United States
- Union
- Union City
- Union Corners
- Union County
- Union Furnace
- Unionport
- Union Ridge
- Union Station
- Uniontown
- Uniontown
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Union, Township of
- Unionvale
- Unionville
- Unionville
- Unionville
- Unionville
- Unionville
- Unionville Center
- Uniopolis
- Unity
- Unity
- Unity, Township of
- University Heights
- University Heights, City of
- University Heights (subdivision)
- Uno