| mutuel | comum |
| Mutuellisme | Mutualismo |
| Mutya Buena | Mutya Buena |
| Muxika | Muxika |
| Muzaffarabad | Muzaffarabad |
| Muzzano | Muzzano |
| Mués | Mues |
| Muğla | Muğla |
| Muş | Muş |
| MV | MV |
| MVP | NBA Most Valuable Player Award |
| MW | MW |
| Mwai Kibaki | Mwai Kibaki |
| Mwanza | Mwanza |
| Mwaro | Mwaro |
| MX | MX |
| My Bielaroussy | Hino nacional da Bielorrússia |
| My Chemical Romance | My Chemical Romance |
| My Fair Lady | My Fair Lady |
| My Generation | My Generation |
| My Left Foot | My Left Foot |
| My Own Private Idaho | My Own Private Idaho |
| Myanmar | Birmânia |
| Myasthénie grave | Miastenia grave |
| Mycenes | Micenas |
| Mycetozoa | Mycetozoa |
| Mycobacterium | Mycobacterium |
| Mycobacterium leprae | Mycobacterium leprae |
| Mycobacterium tuberculosis | Mycobacterium tuberculosis |
| mycologie | micetologia |
| Myconos | Míconos |
| Mycoplasma | Micoplasma |
| mycorhize | micorrizas |
| mycose | pé-de-atleta |
| mycose vaginale | cândida |
| Mycota | Fungos |
| Myctophiformes | Myctophiformes |
| Mycène | Micenas |
| Mycènes | Micenas |
| mycète | micetes |
| Mydriase | Midríase |
| Myers Briggs Type Indicator | MBTI |
| mygale | tarântula |
| Mygalomorphae | Mygalomorphae |
| Mykolaïv | Mykolaiv |
| Mykérinos | Menkauré |
| Mylène Farmer | Mylène Farmer |
| Myobatrachidae | Myobatrachidae |
| Myocarde | Miocárdio |
| Myocardite | Miocardite |
| Myocyte | Fibra muscular |
| Myodésopsie | Moscas Volantes |
| Myofibrille | Miofibrilha |
| Myoglobine | Mioglobina |
| Myopathie de Duchenne | Distrofia muscular progressiva |
| Myopathie némaline | Miopatia nemalínica |
| myope | míope |
| myopie | miopia |
| Myopus schisticolor | Myopus schisticolor |
| Myosis | Miose |
| myosotis | miosótis |
| Myoxidae | Gliridae |
| Myoxocephalus quadricornis | Myoxocephalus quadricornis |
| Myriapoda | Myriapoda |
| Myriapode | Myriapoda |
| Myriapodes | Myriapoda |
| Myrica | Myrica |
| Myricaceae | Myricaceae |
| Myriophyllum | Myriophyllum |
| Myristicaceae | Myristicaceae |
| Myrmecobiidae | Numbat |
| Myrmecobius fasciatus | Numbat |
| Myrmecobius fascitis | Numbat |
| Myrmidons | Mirmidão |
| Myrmécologie | Mirmecologia |
| Myrna Loy | Myrna Loy |
| Myron | Míron |
| Myron Scholes | Myron Scholes |
| myrrhe | mirra |
| Myrsinaceae | Myrsinaceae |
| Myrtaceae | Myrtaceae |
| Myrtales | Myrtales |
| myrte | murta |
| myrtille | mirtilo |
| Myrtillocactus | Myrtillocactus |
| Myrtle Beach | Myrtle Beach |
| Myrtus | Murta-comum |
| Mysore | Mysore |
| Myster Mask | Darkwing Duck |
| Mysterio | Mystério |
| Mystic River | Mystic River |
| Mysticeti | Baleia |
| mysticisme | misticismo |
| Mysticisme nazi | Misticismo nazi |
| mysticité | misticismo |
| mystique | alegórico |
| Mystromys | Brachytarsomys albicauda |
| mystère | quebra-cabeça |
| Mystères à Twin Peaks | Twin Peaks |
| mystérieusement | estranho |
| mystérieux | misterioso |
| Myth | Mito |
| Myth Cloth | Cloth Myth |
| MythBusters | MythBusters |
| mythe | mito |
| Mythe de Cthulhu | Mitos Cthulhu |
| Mythe légende | Mito |
| Mythes | Mitologia |
| mythique | mítico |
| Mythographe | Mitografia |
| mythologie | mitologia |
| Mythologie biblique | Mitologia cristã |
| Mythologie celtique | Mitologia céltica |
| Mythologie celtique irlandaise | Mitologia irlandesa |
| Mythologie chinoise | Mitologia chinesa |
| Mythologie estonienne | Mitologia estoniana |
| Mythologie finnoise | Mitologia finlandesa |
| Mythologie germanique | Mitologia nórdica |
| Mythologie grecque | Mitologia grega |
| Mythologie guarani | Mitologia guarani |
| Mythologie hindoue | Mitologia hindu |
| Mythologie inuit | Mitologia inuit |
| Mythologie japonaise | Mitologia japonesa |
| Mythologie mésopotamienne | Mitologia suméria |
| Mythologie nordique | Mitologia nórdica |
| Mythologie persane | Mitologia persa |
| Mythologie romaine | Mitologia romana |
| Mythologie slave | Mitologia eslava |
| Mythologie égyptienne | Mitologia egípcia |
| Mythologie étrusque | Mitologia etrusca |
| mythologique | mitológico |
| Mythras | Mitraísmo |
| mytiliculture | mitilicultura |
| Myxinidae | Peixe-bruxa |
| myxomatose | mixomatose |
| Myxovirus influenza | Influenza |
| Myxozoa | Myxozoa |
| Myéline | Mielina |
| Myélome multiple | Mieloma múltiplo |
| Má Vlast | Má Vlast |
| Málaga | Málaga |
| Málaga CF | Málaga Club de Fútbol |
| Márcio Santos | Márcio Roberto dos Santos |
| Márcos Baghdatís | Marcos Baghdatís |
| Mário Cesariny | Mário Cesariny |
| Mário Jardel | Mário Jardel Almeida Ribeiro |
| Mário Soares | Mário Soares |
| Mário Zagallo | Mário Jorge Lobo Zagallo |
| Máxima Zorreguieta Cerruti | Máxima Zorreguieta |
| mâche | rapúncio |
| mâchement | mastigação |
