I
- Ida
- Ida Hill
- Ilderton
- Ilfracombe
- Indian River
- Indian River Reserve
- Ingle
- Ingleside
- Inglewood Court
- Inglis Falls
- Ingoldsby
- Ingolf
- Inholmes
- Inkerman
- Innerkip
- Innisfil
- Innisfil Heights
- Inverary
- Invererie Heights
- Inverhaugh
- Inverhuron
- Invermay
- Inverness Lodge
- Inwood
- Iona
- Iona Station
- Ipperwash Beach
- Irena
- Irish Lake
- Irondale
- Ironsides
- Iroquois
- Isaacs Glen
- Ishkaugua Island
- Ishpiming Beach
- Islands In The Trent Waters Ind. Res 36A
- Islay
- Isle of Pines
- Ivan
- Ivanhoe
- Ivanhoe Station
- Ivy
- Ivy Lea