Cities of United States starting with letter O Page 79
- Orkney Springs
- Orla
- Orla (Reeves County)
- Orland (Lake County, South Dakota)
- Orland (Treutlen County)
- Orland (Vinton County)
- Orlando (Braxton County)
- Orlando (Cattaraugus County)
- Orlando (City of Suffolk)
- Orlando (Cleveland County, Arkansas)
- Orlando (Macon County, North Carolina)
- Orlando (Rockcastle County)
- Orlando East Mobile Home Park
- Orlandos Mobile Home Park
- Orlean
- Orleander Estates Colonia
- Orleans (Appanoose County)
- Orleans (Humboldt County)
- Orleans (Ionia County)
- Orleans (Kittson County)
- Orleans (Lincoln County)
- Orleans (Morgan County, Illinois)
- Orleans (Ontario County)
- Orleans Cross Roads
- Orleans Flat
- Orleans Four Corners
- Orma
- Ormand
- Ormanville
- Ormas
- Orme (Prince George's County)
- Ormega
- Ormewood
- Ormond
- Ormonde
- Ormondsville
- Ormrod
- Ormsby (Langlade County)
- Ormsby (McKean County)
- Orndoff
- Orners Corner
- Oro Blanco
- Oro Fino
- Oro Grande
- Oro Loma
- Orodell
- Orogrande (Idaho County)
- Oroleve
- Orondo
- Orono (Osceola County)