- Loughure Island
- Loumanagh
- Loumore
- Low Island
- Lowertown
- Lurrig
- Lusk Island
- Luskin’s Bridge
- Lydradane
- Lyravouig
- Lyre
- Lyre
- Lyre
- Lyre
- Lyre
- Lyredaowen
- Lyrenageeha
- Lyrenamon
- Labbadiha Bridge
- Lackamore
- Lackamore
- Lackaroe
- Laffansbridge
- Lagganstown
- Lagghishanaquilla
- Laghile
- Laght Cross Roads
- Laghtea
- Lahagh
- Lake Village