O
- O'Brien, George Thomas Michael
- Observatory, Hong Kong
- Observatory Hill
- Observatory Road
- Ocean Park
- Ocean Terminal
- Octopus card
- Ohel Leah Synagogue
- Oktoberfest
- Oi Kwan Road
- Old Bailey Street
- Old Master Q
- Old Wan Chai Post Office
- One country, two systems
- One Island East
- The Open University of Hong Kong
- Opium Wars
- Opium War, First
- Opium War, Second
- order of precedence, Hong Kong
- Oriental Daily News
- Oriental Heroes (manhua)
- Origins of names of cities and towns in Hong Kong
- Outlying Islands
- Outward Processing Arrangement (OPA)
Read more about this topic: Index Of Hong Kong-related Articles