I
- Ice Lake
- Ida
- Ida Hill
- Ignace
- Ilderton
- Ilfracombe
- Indian River
- Indiana
- Ingersoll
- Ingle
- Ingleside
- Inglewood
- Inglis Falls
- Ingoldsby
- Ingolf
- Inholmes
- Inkerman
- Inkerman Station
- Innerkip
- Innisfil
- Innisville
- Inverary
- Inverhuron
- Invermay
- Inverness Lodge
- Iona
- Iona Station
- Ireland
- Irish Lake
- Iron Bridge
- Irondale
- Ironsides
- Iroquois
- Iroquois Falls
- Island Grove
- Islington
- Islington
- Ivanhoe
- Iverhaugh
- Ivy
- Ivy Lea
Read more about this topic: List Of Communities In Ontario