Colombie-Britannique
Îles commençant par o
Canada
- Oar Island
- Oblong Island
- Observation Islet
- Obstruction Island
- Ocayu Island
- Odlum Island
- Ogilvie Island
- Ohala Islets
- Ohiat Islet
- Oke Islet
- Okime Island
- Oland Islet
- Olden Island
- O'Leary Islets
- Oliver Islet
- Olsen Island
- Ommaney Islet
- One Tree Islet
- O'Neil Islet
- Onetree Islet
- Onion Island
- Onion Island
- Orr Island
- Orwig Islets
- Ottaway Islet
- Otter Island
- Otter Island
- Oval Island
- Owen Island
- Owens Island
- Owl Island
- Owl Island
- Oyster Island