- Leino Park
- Leisure Lee
- Lenox
- Lenox Dale
- Lenox Station
- Leominster
- Leveau Island
- Leverett
- Leverett Station
- Lewis Island
- Lewis Island
- Lexington
- Leyden
- Liberty Heights
- Liberty Plain
- Lieutenant Island
- Lincoln
- Lincoln Heights
- Linden
- Lindenwood
- Linebrook
- Linwood
- Lithia
- Little Bird Island
- Little Black Rock
- Little Brewster Island
- Little Bridge
- Little Calf Island
- Little Egg Island
- Little Egg Rock