- Magnanville (78200)
- Magny-les-hameaux (78114)
- Maisons-laffitte (78600)
- Mantes-la-jolie (78200)
- Mantes-la-ville (78200)
- Marcq (78770)
- Mareil-le-guyon (78490)
- Mareil-marly (78750)
- Mareil-sur-mauldre (78124)
- Marly-le-roi (78160)
- Maule (78580)
- Maulette (78550)
- Maurecourt (78780)
- Maurepas (78310)
- Medan (78670)
- Menerville (78200)
- Mere (78490)
- Mericourt (78270)
- Meulan-en-yvelines (78250)
- Mezieres-sur-seine (78970)
- Mezy-sur-seine (78250)
- Millemont (78940)
- Milon-la-chapelle (78470)
- Mittainville (78125)
- Moisson (78840)
- Mondreville (78980)
- Montainville (78124)
- Montalet-le-bois (78440)
- Montchauvet (78790)
- Montesson (78360)
- Montfort-l’amaury (78490)
- Montigny-le-bretonneux (78180)
- Morainvilliers (78630)
- Mousseaux-sur-seine (78270)
- Mulcent (78790)
- Neauphle-le-chateau (78640)
- Neauphle-le-vieux (78640)
- Neauphlette (78980)
- Nezel (78410)
- Noisy-le-roi (78590)
- Oinville-sur-montcient (78250)
- Orcemont (78125)
- Orgerus (78910)
- Orgeval (78630)
- Orphin (78125)
- Orsonville (78660)
- Orvilliers (78910)
- Osmoy (78910)
