- Jackscrew Island
- James Bay
- James Island
- Java Islets
- John Parker Islands
- Jordan River
- Jagged Islands
- Jap Island
- Jennie Islet
- Joachim Island
- Jones Island
- Jupiter Island
- Johnson Heights
- Jedediah Island
- Jelina Island
- Jenkins Island
- Jervis Island
- Josephine Islands
- Junction Island
- Jane Island
- Janson Island
- Jaques Island
- Jarvis Island
- John Islet
- Johnstone Island
- Johnson Island
- Jane Island
- Jessop Island
- Jamieson Island
- Jeannette Islands