- Inch Island
- Inishconnell
- Inishmore
- Inishmuck
- Illancrone
- Illies
- Imlick
- Inch
- Inishal
- Inishbarnog
- Inishbeg
- Inishbofin
- Inishcoo
- Inishdooey
- Inishduff
- Inisheane
- Inishfree Lower
- Inishfree Upper
- Inishillintry
- Inishinny
- Inishinny
- Inishkeel
- Inishkeeragh
- Inishmeal
- Inishmeane
- Inishnaneill
- Inishsirrer
- Inishtrahull
- Inver
- Irineragh