| Otsego, MI (City) |
| Otsego County, MI (County) |
| Otsego County, NY (County) |
| Otsego Lake Township, MI (Township) |
| Otsego Town, WI (Town) |
| Otsego Township, MI (Township) |
| Otselic, NY (Town) |
| Ottawa, MN (Township) |
| Ottawa, IL (City) |
| Ottawa, OH (Village) |
| Ottawa, KS (Township) |
| Ottawa, KS (City) |
| Ottawa, KS (Township) |
| Ottawa County, KS (County) |
| Ottawa County, OK (County) |
