- Lamb Island
- Lamb’s Island
- Landscape
- Landsdown
- Landsdowne Bridge
- Lannaght
- Laragh
- Larehill Cross Roads
- Larha
- Lassaha
- Lateeve
- Lateevebeg
- Latoon Bridge
- Lattin
- Laune Bridge
- Lauragh
- Lauragh Bridge
- Lavally
- Leadawittin
- Leader’s Bridge
- Leadmore East
- Leadmore West
- Leagane
- Leagh
- Leaghort
- Leaha Bridge
- Leaheen
- Leamlara
- Leamnaguila
- Leana