- Lissireen
- Lissyconnor
- Listellick
- Listowel
- Listry Bridge
- Little Samphire Island
- Lixnaw
- Loghill
- Loher
- Lohercannan
- Lomanagh
- Long Island
- Lough
- Loughanes
- Lougher
- Lyracrumpane
- Lyre
- Lyre
- Lacka
- Lackendarragh
- Laghtane
- Lisheemine Bridge
- Lismullane
- Lisnagry
- Loghill
- Longford Bridge
- Longford Bridge
- Longstone
- Loughgur Cross
- Luddenbeg