| Arizona State Locator Citys, Towns, Villages, and Other beginning with the letter O |
| CITY/TOWN/VILLAGE/ETC. | LOCATED IN THIS TOWN | COUNTY |
| Oak Creek | Verde | Yavapai |
| Oak Grove | Mohave North | Mohave |
| Oatman | Kingman South | Mohave |
| Ocotillo | Chandler | Maricopa |
| Olberg | Sacaton | Pinal |
| Old Columbine | Safford | Graham |
| Old Oraibi | Hopi | Navajo |
| Old Tucson | Arivaca | Pima |
| Oracle | San Manuel | Pinal |
| Oro Blanco | Nogales | Santa Cruz |
| Oro Valley | Catalina | Pima |
| Overgaard | Snowflake | Navajo |
| Owl | Wellton | Yuma |