- Keith Island
- Kingdom Hall
- Kingsbury Beach
- Kolb Rock
- Konkapot
- Keel Rock
- Kempton Croft
- Kibby Ground
- Kirby Corner
- Knollmere
- Katama
- Kent Corner
- Kents Island
- Kettle Cove Village
- Kettle Island
- Kettle Island Ledge
- Kimball Island
- Kings Forest
- Kinsman Corner
- Kitfield Ledge
- Knapp Rock
- Knights Crossing
- Knights Corner
- Kidds Island
- King Corner
- Kelly Corner
- Kendal Green
- Kendall Square
- Kenwood
- Kingston