| MC | maître de cérémonie |
| MC Algiers | MC Alger |
| McAfee | McAfee |
| McCarran International Airport | Aéroport international McCarran |
| McCarthy | Mac Carthy |
| McCarthyism | Maccarthisme |
| McCord Museum | Musée McCord |
| McCune-Reischauer | McCune-Reischauer |
| McDonaldization | Mcdonaldisation de la société |
| McDonnell Douglas | McDonnell Douglas |
| McDowell | McDowell |
| McDowell County | Comté de McDowell |
| McFly | McFly |
| McGill University | Université McGill |
| McGuire Nuclear Generating Station | Centrale nucléaire de McGuire |
| McGurk effect | Effet McGurk |
| McHenry County | Comté de McHenry |
| Mchinji District | District de Mchinji |
| McIntosh County | Comté de McIntosh |
| McJob | McJob |
| McKees Rocks | McKees Rocks |
| McLaren | Team McLaren Mercedes |
| McLean County | Comté de McLean |
| McLean Stevenson | MacLean Stevenson |
| McLibel case | Affaire McLibel |
| McMahon Line | Ligne Mac-Mahon |
| McMaster University | Université McMaster |
| McMillan | McMillan |
| McMurdo Dry Valleys | Vallées sèches de McMurdo |
| McMurdo Sound | Détroit de McMurdo |
| McMurdo Station | Base antarctique McMurdo |
| McPherson County | Comté de McPherson |
| MD | docteur en médecine |
| MDEA | MDEA |
| Mdina | Mdina |
| MDMA | MDMA |
| MDX | Multidimensional Expressions |
| me | moi |
| Me Against the World | Me Against the World |
| Me First and the Gimme Gimmes | Me First and the Gimme Gimmes |
| Me neither | Moi non plus |
| ME stars | Etoile ME |
| ME variable stars | Etoilevariable ME |
| Me You Them | La Vie peu ordinaire de Dona Linhares |
| mead | hydromel |
| Mead of poetry | Hydromel poétique |
| Meade County | Comté de Meade |
| meadow | prairie |
| Meadow Brown | Myrtil |
| meadow saffron | colchique d'automne |
| meadow-cress | cardamine |
| Meadowcroft Rockshelter | Meadowcroft |
| meager | maigre |
| Meah Shearim | Méa Shéarim |
| meal | repas |
