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