| Oak Hollow, SD (Township) |
| Oak Island, NC (Town) |
| Oak Lake, SD (Township) |
| Oak Lawn, IL (Village) |
| Oak Lawn, MN (Township) |
| Oak Leaf, TX (City) |
| Oak Park, GA (Town) |
| Oak Park, MN (Township) |
| Oak Park, IL (Village) |
| Oak Park, MI (City) |
| Oak Park Heights, MN (City) |
| Oak Park Township, IL (Township) |
| Oak Point, TX (City) |
| Oak Ridge, TX (Town) |
| Oak Ridge, TX (Town) |
