Places beginning with SU in Wisconsin, United States
- Suamico
- Suamico (historical), Town of
- Suamico, Village of
- Sugar Bush
- Sugar Bush
- Sugar Camp
- Sugar Camp, Town of
- Sugar Creek, Town of
- Sugar Grove
- Sugar Island
- Sullivan
- Sullivan, Town of
- Sullivan, Village of
- Summit Corners
- Summit Lake
- Summit, Town of
- Summit, Town of
- Summit, Town of
- Summit, Town of
- Sumner
- Sumner, Town of
- Sumner, Town of
- Sumner, Town of
- Sumpter, Town of
- Sunburst
- Sunflower
- Sunnyside
- Sun Prairie
- Sun Prairie, City of
- Sun Prairie, Town of
- Sunrise Bay
- Sunset
- Sunset Beach
- Sunset Beach
- Sunset Point
- Sunset Point (historical)
- Superior
- Superior, City of
- Superior, Town of
- Superior Village
- Superior, Village of
- Suring
- Suring, Village of
- Sussex
- Sussex, Village of
- Sutherland