- Lewiston Junction
- Lisbon Center
- Little Ram Island
- Littlefield Corner
- Livermore Center
- Lothrop Island
- Lovewell Island
- La Grande Island
- Lac Frontiere
- Lavertue
- Les Trois Island
- Levesque Island
- Little Canada
- Loring AFB
- Lanes Island
- Leavitt Island
- Libbytown
- Ligonia
- Lindsay Island
- Little Birch Island
- Little Birch Island
- Little Bull Ledge
- Little Bustins Island
- Little Chebeague Island
- Little Diamond Island
- Little Diamond Island Landing
- Little Falls
- Little Falls-South Windham
- Little French Island
- Little Iron Island