| Williamsburg Township, OH (Township) |
| Williamsfield, IL (Village) |
| Williamsfield Township, OH (Township) |
| Williamson, WV (City) |
| Williamson, GA (City) |
| Williamson, IL (Village) |
| Williamson, IA (City) |
| Williamson, NY (Town) |
| Williamson County, TX (County) |
| Williamson County, TN (County) |
| Williamson County, IL (County) |
| Williamsport, MD (Town) |
| Williamsport, OH (Village) |
| Williamsport, PA (City) |
| Williamsport, IN (Town) |
