I
- Ice Lake
- Ida
- Ida Hill
- Ignace
- Ilderton
- Ilfracombe
- Indian Landing
- Indianola Beach
- Indian River
- Indian River Reserve
- Ingersoll
- Ingle
- Ingleside
- Inglewood
- Inglewood Court
- Inglis Falls
- Ingoldsby
- Ingolf
- Inholmes
- Inkerman
- Innerkip
- Innisfil
- Innisfil Heights
- Innisville
- Inverary
- Invererie Heights
- Inverhaugh
- Inverhuron
- Invermay
- Inverness Lodge
- Inwood
- Iona
- Iona Station
- Ionview
- Ipperwash Beach
- Irena
- Irish Lake
- Iron Bridge
- Irondale
- Ironsides
- Iroquois
- Iroquois Falls
- Isaacs Glen
- Isbester
- Isherwood
- Ishkaugua Island
- Ishpiming Beach
- Isis
- Island Falls
- Island Grove
- Island Lake
- Islands In The Trent Waters Ind. Res 36A
- Island View Beach
- Islay
- Isle of Pines
- Islington
- Islington-City Centre West
- Ivan
- Ivanhoe
- Ivanhoe Station
- Ivy
- Ivy Lea
