| Iberville | CHICOUTIMI & SAGUENAY | QUEBEC |
| Iberville (Town/Ville) | SAINT-JEAN & IBERVILLE | QUEBEC |
| Ignace | ALGOMA | ONTARIO |
| Ile Verte | TEMISCOUATA | QUEBEC |
| Ile d'Anticosti | CHICOUTIMI & SAGUENAY | QUEBEC |
| Île Dupas | BERTHIER | QUEBEC |
| Ile-aux-Coudres | CHARLEVOIX | QUEBEC |
| Indian Head | ASSINIBOIA (East/Est) | THE TERRITORIES |
| Indian Harbour | GUYSBOROUGH | NOVA SCOTIA |
| Indian River (Yukon) | UNORGANIZED TERRITORIES/TERRITOI | THE TERRITORIES |
| Indian River District (Yukon) | UNORGANIZED TERRITORIES/TERRITOI | THE TERRITORIES |
| Indian River Overland District (Yukon) | UNORGANIZED TERRITORIES/TERRITOI | THE TERRITORIES |
| Ingersoll (Town/Ville) | OXFORD (South/Sud) | ONTARIO |
| Ingonish | VICTORIA | NOVA SCOTIA |
| Ingram River | HALIFAX | NOVA SCOTIA |
| Inhabitants River | INVERNESS | NOVA SCOTIA |
| Inhabitants River (Part/Partie) | RICHMOND | NOVA SCOTIA |
| Inkerman | GLOUCESTER | NEW BRUNSWICK |
| Innisfail | ALBERTA | THE TERRITORIES |
| Innisfil | SIMCOE (South/Sud) | ONTARIO |
| Insinger | ASSINIBOIA (East/Est) | THE TERRITORIES |
| Intervale | GUYSBOROUGH | NOVA SCOTIA |
| Inverness | MÉGANTIC | QUEBEC |
| Iona | VICTORIA | NOVA SCOTIA |
| Ireland (North/Nord) | MÉGANTIC | QUEBEC |
| Ireland (South/Sud) | MÉGANTIC | QUEBEC |
| Iroquois (Village) | DUNDAS | ONTARIO |
| Isaac Harbour | GUYSBOROUGH | NOVA SCOTIA |
| Island Lake | SASKATCHEWAN | THE TERRITORIES |
| Islands | YARMOUTH | NOVA SCOTIA |
| Italy Cross | LUNENBURG | NOVA SCOTIA |