- Kalers Corner
- Katen Corner
- Keegan
- Keenes Corner
- Kelleyland
- Kelly Island
- Kelly Island
- Kendalls Corner
- Kenduskeag
- Kennard Corner
- Kennebago
- Kennebago Settlement
- Kennebec
- Kennebunk
- Kennebunk Beach
- Kennebunk Landing
- Kennebunkport
- Kennedy Corner
- Kennedy Terrace
- Kents Hill
- Keough
- Ketchum
- Keyes Corner
- Kezar Falls
- Kiahs Island
- Killick Stone Island
- Kimball Island
- Kimballs Corner
- Kimbles Corner
- King Brook Island