Places beginning with UN in South Dakota, United States
- Underwood (historical), Township of
- Union Center
- Union County
- 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
- Unityville