Cities
- Jack s Lake ON
- Jackson ON
- Jacksonburg ON
- Jacksons Point ON
- Jaffa ON
- Janetville ON
- Jarratt ON
- Jarvis ON
- Jeannettes Creek ON
- Jellyby ON
- Jermyn ON
- Jerseyville ON
- Jessopville ON
- Jessups Falls ON
- Jevins ON
- Jocko Point ON
- Johnston Corners ON
- Johnstown ON
- Jordan Harbour ON
- Jordan ON
- Jordan Station ON
- Jorgina ON
- Josephsburg ON
- Joyland Beach ON
- Juddhaven ON
- Junetown ON
- Juniper Island ON