- Mackville
- Madisonville
- Malaga
- Mallie
- Manchester
- Mannsville
- Marion
- Martin
- Martin-Allen
- Massac
- Mayfield
- Mayflower
- Mayking
- Mays Lick
- Mayslick
- Maysville
- McAndrews
- McCarr
- McDaniels-Hudson
- McDowell
- McKee
- McKinney
- McRoberts
- Meally
- Means
- Melber
- Melvin
- Middleburg
- Middlesboro
- Middlesborough
- Midway
- Mill Springs
- Millard
- Millersburg
- Millerstown
- Millstone
- Minnie
- Miracle
- Mize
- Monterey
- Monterey-New Columbus
- Monticello
- Moorefield
- Morehead
- Mt Eden
- Mt Olivet
- Mt Sterling
- Mt Vernon
- Mt Victory
- Mousie
- Mouthcard
- Mozelle
- Murray