Places beginning with OA in Wisconsin, United States
- Oak Center
- Oak Creek
- Oak Creek, City of
- Oakdale
- Oakdale, Town of
- Oakdale, Village of
- Oakfield
- Oakfield, Town of
- Oakfield, Village of
- Oak Grove
- Oak Grove (historical)
- Oak Grove, Town of
- Oak Grove, Town of
- Oak Grove, Town of
- Oak Hall
- Oak Hill
- Oak Knoll
- Oak Knoll
- Oakland
- Oakland
- Oakland Heights
- Oakland, Town of
- Oakland, Town of
- Oakland, Town of
- Oakley
- Oak Orchard
- Oakridge
- Oakwood
- Oakwood
- Oasis, Town of