Papouasie-Nouvelle Guinée
Îles commençant par o
- Observation Island
- Observation Island
- Oburak Island
- Okoru Island
- Onda Island
- One Hundred Mile Island
- Ong Island
- Onia Island
- Onneta Island
- Oparea Island
- Opea Island
- Oreia Islet
- Orope Island
- Osasai Islet
- Otaneel Island
- Otua Islet