Nouvelle-Galles du Sud
Îles commençant par o
Australie
- Oak Island
- Oakey Island
- Oaky Island
- O’Hara Island
- Old Man Island
- Oldman Island
- One Tree Island
- One Tree Island
- Orobilbah Island
- Orogandiman Island
- Ounougoman Island
- Oxley Island
- Oyster Islet