- Lisheenowen
- Lislevane
- Lismire
- Lisnaboy
- Lisnalanniv
- Lispatrick
- Lisquinlan Cross
- Lissaclarig
- Lissacresig
- Lissacroneen Cross Roads
- Lissacrue
- Lissagraffin
- Lissangle
- Lissanisky
- Lissaphooca Cross Roads
- Lissardagh
- Lissarnona
- Lissarourke
- Lissavourd
- Lisselan
- Little Island
- Little Island Roads
- Lochcarrig
- Lombardstown
- Long Island
- Longueville
- Loughane
- Loughane East
- Loughbeg
- Loughine