- Illanascraw
- Illanataggart
- Illanatee
- Illanavrick
- Illanbaun
- Illanbry
- Illancroagh
- Illandavuck
- Illanee
- Illanleamnahelty
- Illanmaster
- Illannaconney
- Illannaglashy
- Illannambraher
- Illannaskenoga
- Illanroe
- Illanroe
- Illanulgue
- Illaunnamona
- Illinaun Island
- Imleach Beag
- Imleach Cais
- Inagh
- Inishaghod
- Inishbee
- Inishbiggle
- Inishbollog
- Inishcuill
- Inishdaff
- Inishdasky