Cities and Communities in Southern Ontario
(check also Northern Ontario)
| Ida | Inverhuron | Jack Lake |
| Ilderton | Invermay | Jackson |
| Ilfracombe | Inwood | Jacksons Point |
| Ingersoll | Iona | Jamot |
| Ingleside | Iona Station | Janetville |
| Inglewood | Ipperwash Beach | Jarratt |
| Ingoldsby | Irish Lake | Jarvis |
| Inkerman | Iron Bridge | Jasper |
| Innerkip | Irondale | Jeannettes Creek |
| Innisfil | Island Grove | Jerseyville |
| Innisfil Heights | Ivanhoe | Jewelville |
| Innisville | Ivy | Johnstown |
| Inverary | Ivy Lea | Jones Falls |
| Inverhaugh | Jordan | |
| Jordan Station | ||
| Joyceville |