| M dwarf star | Estrella M enana |
| M giant star | Estrella M gigante |
| M magnitude | Magnitud M |
| M regions | Región M |
| M star | Estrella M |
| M*A*S*H | M*A*S*H |
| M-learning | Aprendizaje electrónico móvil |
| M-tel Masters | Torneo M-tel de ajedrez |
| M-theory | Teoría M |
| M-V | Mu |
| M.S. | maestro en ciencias |
| MA | maestro en humanidades |
| Ma and Pa Kent | Jonathan Kent |
| Ma Barker | Kate Ma Baker |
| Ma Normandie | Ma Normandie |
| Ma vie en rose | Ma vie en rose |
| Ma Zhiyuan | Ma Zhiyuan |
| ma'am | señora |
| Maackia | Maackia |
| Maahes | Heh |
| Maakhir | Maakhir |
| Maamar Mamouni | Maamar Mamouni |
| Maamme | Maamme |
| Maardu | Maardu |
| Maarten Stekelenburg | Maarten Stekelenburg |
| Maarten Tromp | Maarten Harpertszoon Tromp |
| Maasai | Masai |
| Maastricht | Maastricht |
| Maastricht Treaty | Tratado de la Unión Europea |
| Maastrichtian | Maastrichtiano |
| Maat Mons | Maat Mons |
| Maathorneferure | Maathornefrura |
| Maatia Toafa | Maatia Toafa |
| Maaya Sakamoto | Maaya Sakamoto |
| Maayan | Maayan |
| Mabinogion | Mabinogion |
| Mabo v Queensland | Mabo contra Queensland |
| Mabrouk Zaid | Mabrouk Zaid |
| Mabuya | Mabuya |
| MAC address | Dirección MAC |
| Mac Cuill | Mac-Cuill |
| Mac Gargan | Escorpión |
| Mac mini | Mac mini |
| Mac OS | Mac OS |
| Mac OS X | Mac OS X |
| Mac Pro | Mac Pro |
| Mac Robertson Land | Tierra de Mac Robertson |
| Macabeo | Uva macabeo |
| macabre | macabro |
| Macaca arctoides | Macaca arctoides |
| Macadamia | Macadamia |
| Macalester College | Macalester College |
| Macanese language | Idioma macaense |
| Macanese people | Macaense |
| Macao | Macao |
| Macapá | Macapá |
| Macar | Macareo |
| Macarena | La Macarena |
| Macaronesia | Macaronesia |
| macaroni | macarrones |
| Macaroni and cheese | Macaroni and cheese |
| macaronic | macarrónico |
| Macaronic language | Macaroni lenguaje |
| macaroon | almendrado |
| Macau | Macao |
| Macau International Airport | Aeropuerto Internacional de Macao |
| Macau national football team | Selección de fútbol de Macao |
| Macaulay Culkin | Macaulay Culkin |
| macaw | ara |
