| Musselfork, MO (Township) |
| Musselshell County, MT (County) |
| Mussey Township, MI (Township) |
| Mussman, SD (Township) |
| Mustang, OK (City) |
| Mustang, TX (Town) |
| Mustang Ridge, TX (City) |
| Muttontown, NY (Village) |
| Mutual, OK (Town) |
| Mutual, OH (Village) |
| Myakka Ranch Community Development District, FL (CDD) |
| Myers, MO (Township) |
| Myerstown, PA (Borough) |
| Myersville, MD (Town) |
| Mylo, ND (City) |
