Places beginning with SU in Iowa, United States
- Sugar Creek (historical)
- Sugar Creek, Township of
- Sugar Creek, Township of
- Sugar Grove, Township of
- Sully
- Sulphur Springs
- Summerset
- Summerset Junction (historical)
- Summerset, Township of
- Summit
- Summit
- Summit
- Summit (historical)
- Summit, Township of
- Summit, Township of
- Summit, Township of
- Summit, Township of
- Summit View Mobile Home Park
- Summit Village Dyersville Park
- Summitville
- Sumner
- Sumner, City of
- Sumner No. 2, Township of
- Sumner, Township of
- Sumner, Township of
- Sumner, Township of
- Sumner, Township of
- Sunbury
- Sunfield Mobile Home Park
- Sunny-Brook Mobile Home Park
- Sunrise Mobile Court
- Sunrise Mobile Home Community
- Sunrise Mobile Home Park
- Sunrise Mobile Home Park
- Sunrise Mobile Home Village
- Sunset Village
- Sunset Village
- Sunset Village Mobile Home Park
- Sunshine
- Superior
- Superior, Township of
- Sutherland
- Sutliff