| Mayday | señal de socorro |
| Mayence | Maguncia |
| Mayenne | Mayenne |
| Mayenne River | Mayenne |
| Mayer Amschel Rothschild | Mayer Amscher Rothschild |
| Mayer Amschel Rothschild family | Rothschild |
| Mayerling | Mayerling |
| Mayerling Incident | Mayerling |
| Mayflower Compact | Pacto de Mayflower |
| mayfly | cachipolla |
| mayhem | mutilación |
| Maykop | Maykop |
| Maylene and the Sons of Disaster | Maylene and the Sons of Disaster |
| Maymana | Maymanah |
| Maynard James Keenan | Maynard James Keenan |
| Maynas Province | Provincia de Maynas |
| Mayne Island | Isla Mayne |
| Mayo River | Río Mayo-Chinchipe |
| Mayo-Kebbi Est Region | Región de Mayo-Kebbi Este |
| Mayo-Kebbi Ouest Region | Región de Mayo-Kebbi Oeste |
| Mayon Volcano | Monte Mayon |
| mayonnaise | mayonesa |
| mayor | alcalde |
| Mayor Luis Jorge Fontana Department | Departamento Mayor Luis Jorge Fontana |
| Mayor of Castile | Muniadona de Castilla |
| mayoress | alcaldesa |
| Mayotte | Mayotte |
| Mays | Mayo |
| Maysan Governorate | Maysan |
| Mayta Capac | Mayta Cápac |
| Mayte Garcia | Mayte García |
| Mayu Shinjo | Mayu Shinjō |
| Mayumi Asano | Mayumi Asano |
| Mayuri Kurotsuchi | Mayuri Kurotsuchi |
| Mazal Tov | Mazal Tov |
| Mazandaran | Mazandarán |
| Mazandarani language | Idioma mazandaraní |
| Mazari Sharif | Mazār-e Šarīf |
| Mazari Shariff | Mazār-e Šarīf |
| Mazatlán | Mazatlán |
| Mazda | Mazda |
| Mazda Millenia | Mazda Millenia |
| Mazdak | Mazdak |
| maze | laberinto |
| Mazeppa | Mazeppa |
| Mazghuna | Mazghuna |
| Mazinger Z | Mazinger Z |
| Mazingira Green Party of Kenya | Partido Verde |
| Mazinho | Mazinho |
| mazourka | mazurca |
| Mazowsze Voivodship | Voivodia de Mazovia |
| Mazurians | Masuria |
| mazurka | mazurca |
| Mazurs | Masuria |
| maître d'hôtel | jefe de comedor |
| Mažeikiai | Mažeikiai |
| Mažeikiai district municipality | Distrito Municipio de Mažeikiai |
| Mbabane | Mbabane |
| Mbayá | Guaycurú |
| MBC Dynamo Moscow | FC Dynamo Moscú |
| MBDA Apache | Apache |
| MBDA Meteor | MBDA Meteor |
| Mbox | Mbox |
| Mbps | Megabit por segundo |
| Mbyte | Mb |
| Mbytes | Mb |
| MC | maestro de ceremonias |
| McCarran International Airport | Aeropuerto Internacional McCarran |
| McCarthyism | Macarthismo |
| McCord Museum | Museo McCord |
| McCune-Albright syndrome | Síndrome de McCune-Albright |
| McCune-Reischauer | McCune-Reischauer |
| McDonnell Aircraft | McDonnell Aircraft Corporation |
| McDonnell Douglas | McDonnell Douglas |
| McFly | Mcfly |
| McGill University | Universidad McGill |
| McGuire Nuclear Generating Station | Central Nuclear McGuire |
| Mchinji District | Distrito de Mchinji |
| McKean Island | Isla McKean |
| McLaren | Team McLaren |
| McMahon-Hussein Correspondence | Correspondencia Husayn-McMahon |
| McMaster University | Universidad McMaster |
| McMurdo Station | Planta de McMurdo |
| MD | Doctor en Medicina |
| Mdina | Mdina |
| MDMA | MDMA |
| me | yo |
| Me Against the Music | Me Against the Music |
| Me Against the World | Me Against the World |
| Me First and the Gimme Gimmes | Me First and the Gimme Gimmes |
| ME star | Estrella ME |
| ME variable star | Estrella variable ME |
| mead | aguamiel |
