| musquash | ratón almizclero |
| musquito | mosquito |
| Mussaurus | Mussaurus |
| mussel | mejillón |
| mussel farming | cultivo del mejillón |
| mussels | almejas |
| Mussius Aemilianus | Musio Emiliano |
| Mussoorie | Mussoorie |
| Mussorgsky family | Mussorgski |
| must | deber |
| Must-carry | Must carry |
| mustache | bigote |
| mustachio | bigote |
| Mustafa I | Mustafa I |
| Mustafa II | Mustafa II |
| Mustafa III | Mustafa III |
| Mustafa IV | Mustafa IV |
| Mustafa Kemal Atatürk | Mustafa Kemal Atatürk |
| mustang | mustango |
| mustard | mostaza |
| Mustard oil | Aceite de mostaza |
| Mustard seed oil | Aceite de mostaza |
| Mustardseed oil | Aceite de mostaza |
| Mustela | Mustela lutreola |
| mustelid | mustélidos |
| Mustelidae | Mustelidae |
| muster | reunirse |
| muster up | conseguir |
| Mustique | Mustique |
| Mustjala Parish | Mustjala |
| musty | que huele a humedad |
| Musée du quai Branly | Museo del muelle Branly |
| Musée Fabre | Museo Fabre |
| Musée Grévin | Museo Grévin |
| Musée Jacquemart-André | Museo Jacquemart-André |
| Musée maritime fluvial et portuaire de Rouen | Museo marítimo fluvial y portuario de Ruán |
| Musée Marmottan-Monet | Museo Marmottan-Monet |
| Musée Picasso | Museo Picasso de Barcelona |
| Musée Rodin | Museo Rodin |
| mutability | mutabilidad |
| mutable | variable |
| mutagen | mutágeno |
| mutagenicity | mutagenicidad |
| mutagenicity testing | prueba de mutagenicidad |
| mutant | mutante |
| mutate | mudar |
| mutated micro-organisms release | liberación transformada de microorganismos |
| mutation | mutación |
| Mutationism | Mutacionismo |
| Mutawintji National Park | Parque Nacional Mutawintji |
| mute | mudo |
| Mute Swan | Cygnus olor |
| muted | sordo |
| Mutemwiya | Mutemuia |
| muteness | mudez |
| Mutesa II of Buganda | Mutesa II de Buganda |
| Mutig | Anmutig |
| mutilate | dañar |
| mutilation | mutilación |
| mutineer | amotinador |
