Is
- Isaac Creek
- Isaac Lake
- Isaac Point
- Isaacon Island
- Isaacs Harbour
- Isaacs Lake
- Isabella Bank
- Isabella Bay
- Isabella Lake
- Isabella Louisa Island
- Isachsen
- Isachsen Island
- Isachsen Island
- Isachsen Peninsula
- Isachsen Point
- Isbister Lake
- Isbjorn Strait
- Isfjeld
| - Iskoot
- Iskoot
- Iskut
- Iskut Mountain
- Iskut River
- Iskwasum Lake
- Iskwayach Lake
- Island
- Island
- Island Cove
- Island Cove
- Island Falls
- Island Falls
- Island Falls Junction
- Island Falls Reservoir
- Island Falls Station
- Island Harbour
- Island Inlet
| - Island Lake
- Island Lake
- Island Lake
- Island Lake
- Island Portage
- Island River
- Island of Montreal
- Island of Newfoundland
- Island of Pond
- Island of Ponds
- Islands Lake
- Islands of Gods Mercie
- Isle Brochet
- Isle Lake
- Isle Madame
- Isle Maligny
- Isle Pierre
- Isle aux Morts
| - Isle de Bois
- Isle of Cairns
- Isle-Maligne
- Isle-Maligne
- Isle-Morte
- Isle-Perrot
- Isle-Verte
- Isles Pilgrim
- Isles de la Reine-Elisabeth
- Isnardy
- Isolation Lake
- Isortoq Fiord
- Isortoq River
- Isoukustouc River
- Ispatinow Island
- Issett Lake
- Issortukdjuak Fiord
- Issoudun
- Istapta
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