- Milltown
- Milltown
- Milltown
- Magheramason
- Milltown
- Macfinn Lower
- Macosquin
- Maddan
- Maghera
- Magheracreggan
- Magherafelt
- Magheragall
- Magheralane
- Magheralin
- Magheramorne
- Magherasaul
- Magheraveely
- Maghery
- Maguires Bridge
- Markethill
- Mayobridge
- Meigh
- Mill Loughan
- Millford
- Millisle
- Moira
- Monea
- Moneydig
- Moneymore
- Moneyneany