- Oakhurst to Regents Court Sydney
- Oakville to Regents Court Sydney
- Oatlands to Regents Court Sydney
- Oatley to Regents Court Sydney
- Old Guildford to Regents Court Sydney
- Old Toongabbie to Regents Court Sydney
- Oran Park to Regents Court Sydney
- Orchard Hills to Regents Court Sydney
- Oxford Falls to Regents Court Sydney
- Oxley Park to Regents Court Sydney
- Oyster Bay to Regents Court Sydney
- Sydney Airport to Regents Court Sydney
- Regents Court Sydney to Oakhurst
- Regents Court Sydney to Oakville
- Regents Court Sydney to Oatlands
- Regents Court Sydney to Oatley
- Regents Court Sydney to Old Guildford
- Regents Court Sydney to Old Toongabbie
- Regents Court Sydney to Oran Park
- Regents Court Sydney to Orchard Hills
- Regents Court Sydney to Oxford Falls
- Regents Court Sydney to Oxley Park
- Regents Court Sydney to Oyster Bay
- Regents Court Sydney to Sydney Airport