Places beginning with UN in Iowa, United States
- Underwood
- Union
- Union Burg (historical)
- Union Center
- Union City, Township of
- Union County
- Union Mills
- Union Prairie, 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
- 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
- Unionville
- Unique
- University Heights
- University Park