| Maxentius | Maxentius |
| maximal immissionshalt | maksimal immissionskoncentration |
| Maximianus | Maximian Herculius |
| Maximilian Kolbe | Maximilian Kolbe |
| Maximilien de Robespierre | Maximilien Robespierre |
| Maximinus Daia | Maximinus II Daza |
| Maximinus Thrax | Maximinus I Thrax |
| Maximum Overdrive | Gysen |
| Maximum Transmission Unit | Maximum Transmission Unit |
| Maxwells demon | Maxwells dæmon |
| Maxwells ekvationer | Maxwells ligninger |
| Maxwells elektromagnetiska ekvationer | Maxwells ligninger |
| Mayaindianer | Maya |
| Mayakulturen | Maya |
| Mayansk mytologi | Mayaernes mytologi |
| Mayaruiner | Mayaruiner |
| Mayask mytologi | Mayaernes mytologi |
| Mayenne | Mayenne |
| Mayflower | Mayflower |
| Mayo | County Mayo |
| Mayotte | Mayotte |
| Maysan | Maysan |
| Mazandaran | Mazandaran |
| Mazda | Mazda |
| Maze prison | Labyrint |
| Mazefängelset | Labyrint |
| Mazenderani | Mazenisk |
| Mazurek Dąbrowskiego | Mazurek Dąbrowskiego |
| Małopolska | Województwo małopolskie |
| Mbabane | Mbabane |
| McCarthyism | Mccarthyisme |
| McDonnell | McDonnell Aircraft Corporation |
| McFly | McFly |
| McLaren | Team McLaren |
| MDF | MDF |
| MDI | HCI |
| Mdina | Medina |
| MDMA | Ecstasy |
| Mean Girls | Mean Girls |
| Mean Machine | Rødt kort |
| Meandrande bäck | Mæander |
| Meat Loaf | Meat Loaf |
| Meath | County Meath |
| Mebibit | Mebibit |
| Mechelen | Mechelen |
| Mecklenburg | Mecklenburg |
| Mecklenburg-Vorpommern | Mecklenburg-Vorpommern |
| med | ligeså |
| med ens | pludseligt |
| med ensamrätt | alle rettigheder forbeholdes |
| med flera | og andre |
| Med rätt att döda | Licence Renewed |
| med vänliga hälsningar | med venlig hilsen |
| Medal of Honor | Medal of Honor |
| medan | mens |
| Medan vi faller | Had |
| medarbetare | kollega |
