- Oak Hill
- Oakland
- Ollie
- Oakville
- Olivers Mill
- Ohoopee
- Osborn
- Orianna
- Orland
- Oak Grove
- Oak Grove
- Old Chimney
- Oak Harbor
- Oakhill
- Olde Federal Pointe
- Owltown
- Oak Bluff
- Oak Grove Island
- Oak Island
- Oakton
- Oglethorpe Manor
- Oglethorpe Park
- Orchard Hills
- Old Tallapoosa
- Oostanaula
- O Neal
- Odessa
- Ochwalkee
- Oak Mountain
- Ossahatchie