| Morgantown, KY (City) |
| Morgantown, WV (City) |
| Morganville, KS (City) |
| Morganza, LA (Village) |
| Moriah, NY (Town) |
| Moriarty, NM (City) |
| Morken, MN (Township) |
| Morlan, KS (Township) |
| Morland, KS (City) |
| Morley, MO (City) |
| Morley, IA (City) |
| Morning Sun, IA (City) |
| Morning Sun Township, IA (Township) |
| Morningside, MD (Town) |
| Morningside Community Development District, FL (CDD) |
