- Jackins Settlement
- Jackman
- Jackman Corner
- Jackson
- Jackson Island
- Jacksonville
- Jamaica Island
- Jaquish Island
- Jay
- Jed Island
- Jefferson
- Jehlickoo Island
- Jemtland
- Jenks Landing
- Jenny Island
- Jennys Nubble
- Jewell Island
- Jewells Corner
- Jewett
- Jims Island
- Jims Island
- Jo-mary Island
- Job Island
- Joes Island
- Joes Island
- Joes Rock
- John Island
- John J Island
- John White Island
- Johns Island