Cities of United States starting with letter O Page 81
- Orth
- Ortin Heights
- Ortiz
- Ortiz (Webster County)
- Ortley (Wasco County)
- Ortley Beach
- Ortley Terrace
- Orton
- Orton (Gilmer County, West Virginia)
- Orton (Harrison County, Iowa)
- Orton (Little River County)
- Orton Hill
- Ortona
- Ortona (Volusia County)
- Ortonville (Dallas County, Iowa)
- Ortonville (Ventura County)
- Orum
- Orum (Washington County)
- Orva
- Orvil
- Orvilla
- Orville
- Orville (Henry County, Kentucky)
- Orville (Logan County, West Virginia)
- Orvin
- Orvisburg
- Orwell (Addison County)
- Orwell (Bradford County)
- Orwell (Hodgeman County)
- Orwell (Oswego County)
- Orwig
- Orwood
- Orysa
- Osa
- Osage (Camden County)
- Osage (Carroll County, Arkansas)
- Osage (Coryell County)
- Osage (Henry County, Tennessee)
- Osage (Jefferson County, Ohio)
- Osage Bend
- Osage Bluff
- Osage City (Cole County)
- Osage Heights
- Osage Hills
- Osage Junction
- Osage Mills
- Osaka
- Osaka (Escambia County, Alabama)
- Osanippa
- Osbernville