O
- (Waterberg District Municipality) Overyssel
- (Waterberg District Municipality) Ouklip
- (Sekhukhune District Municipality) Ottensville
- (Vhembe District Municipality) Oporto
- (Mopani District Municipality) Oochock
- (Waterberg District Municipality) Onverwacht
- (Waterberg District Municipality) Ons Hoop
- (Mopani District Municipality) Olyfberg
- (Vhembe District Municipality) Olifantshoek
- (Mopani District Municipality) Ofcolaco