| Ruidoso Downs, NM (City) |
| Rule, TX (City) |
| Ruleville, MS (City) |
| Rulo, NE (Village) |
| Ruma, IL (Village) |
| Rumford, ME (Town) |
| Rumley Township, OH (Township) |
| Rumney, NH (Town) |
| Rumson, NJ (Borough) |
| Runaway Bay, TX (City) |
| Runeberg, MN (Township) |
| Runge, TX (City) |
| Runnells, IA (City) |
| Runnels County, TX (County) |
| Runnemede, NJ (Borough) |
