| maître d'hôtel | maître |
| Mažeikiai | Mažeikiai |
| Mbabane | Mbabane |
| Mbacké Department | Mbacke |
| Mbala | Mbala |
| Mbayá | Embaiás |
| MBC Dynamo Moscow | Dínamo de Moscovo |
| MBDA Apache | Apache |
| MBDA Meteor | Meteor |
| Mbeya Region | Mbeya |
| Mbira | Quissange |
| Mbombela Stadium | Mbombela Stadium |
| Mbps | Megabit por segundo |
| Mbpsend | Mbps (megabits por segundo) |
| Mbuji-Mayi | Mbuji-Mayi |
| Mbyte | MB |
| Mbytes | MB |
| MC | apresentador |
| McAfee | McAfee |
| McCarran International Airport | Aeroporto Internacional de Las Vegas |
| McCarthyism | Macartismo |
| McDonaldization | McDonaldização |
| McDonnell Aircraft | McDonnell Aircraft Corporation |
| McDonnell Douglas | McDonnell Douglas |
| McDowell County | Condado de McDowell |
| McFly | McFly |
| McGill University | Universidade McGill |
| McGuire Air Force Base | McGuire AFB |
| McHenry County | Condado de McHenry |
| Mchinji District | Mchinji |
| McIntosh County | Condado de McIntosh |
| McJob | Mcjob |
| McLaren | Team McLaren |
| McLean County | Condado de McLean |
| McMahon-Hussein Correspondence | Correspondência Hussein-McMahon |
| McPherson County | Condado de McPherson |
| MD | médico |
| md condition | m (metro)o |
| Mdina | Mdina |
| me | me |
| Me Against the Music | Me Against the Music |
| Me First and the Gimme Gimmes | Me First And The Gimme Gimmes |
| Me You Them | Eu Tu Eles |
| mead | hidromel |
| Meade County | Condado de Meade |
| meadow | prado |
| meadow saffron | cólquico |
| meager | miserável |
| meagerear | parco |
| Meagre set | Conjunto magro |
| Meah Shearim | Mea Shearim |
| meal | refeição |
| meal ticket (AUS) | fonte de renda (gíria) |
| mealies | milho |
| mealtime | hora de comer |
| mealtory | refeiçãoo |
| Mealworm beetle | Bicho-da-farinha |
| Mealy Amazon | Papagaio-moleiro |
| mean | desagradável |
| Mean anomaly | Anomalia verdadeira |
| Mean corpuscular hemoglobin concentration | Concentração de Hemoglobina Corpuscular Média |
| Mean corpuscular volume | Volume corpuscular médio |
| Mean field theory | Teoria de campo médio |
| Mean Girls | Mean Girls |
| Mean lifetime | Vida média |
| Mean Machine | Cartão vermelho |
