| Mario | Mario |
| Mario Andretti | Mario Andretti |
| Mario Puzo | Mario Puzo |
| Mario Vargas Llosa | Mario Vargas Llosa |
| Mario Vazquez | Mario Vazquez |
| Marion Jones | Marion Jones |
| Maritzoprøret | Maritz Rebellion |
| Mariupol | Mariupol |
| Marián Hossa | Marián Hossa |
| mark | patch |
| Mark Barney Greenway | Mark Greenway |
| Mark David Chapman | Mark David Chapman |
| Mark Hamill | Mark Hamill |
| Mark Knopfler | Mark Knopfler |
| Mark Twain | Mark Twain |
| Markaryds kommun | Markaryd Municipality |
| Markazi | Markazi Province |
| marked | marketplace |
| markedsform | market form |
| markedsforskning | market research |
| Markedsføring | Marketing |
| markedsføring af miljøvenlige produkter | ecomarketing |
| markedsplads | market |
| markedspris | market price |
| Markedsrisiko | Market risk |
| markedsundersøgelse | market study |
| markedsøkonomi | market economy |
| Markel Irízar | Markel Irizar |
| marketing | marketing |
| markforsøg | field experiment |
| Markion | Marcion of Sinope |
| Markis de Sade | Marquis de Sade |
| Markland | Markland |
| Markovkæde | Markov chain |
| markskade | field damage |
| Marktl am Inn | Marktl am Inn |
| Markus | Marcus |
| Markus Näslund | Markus Näslund |
| Markus Wolf | Markus Wolf |
| Markusevangeliet | Gospel of Mark |
| Markørgener | Marker gene |
| Marlborough | Marlborough |
| Marlene Dietrich | Marlene Dietrich |
| Marlon Brando | Marlon Brando |
| Marmarahavet | Sea of Marmara |
| marmor | marble |
| Marmorbugle | Ball |
| Marmorkat | Marbled Cat |
| Marnardal | Marnardal |
| Marne | Marne |
| Marokko | Morocco |
| Marowijne | Marowijne District |
| Marrakech | Marrakech |
| Mars | Mars |
| Mars Exploration Rovers | Mars Exploration Rover |
| Mars Express | Mars Express |
| Mars Pathfinder | Mars Pathfinder |
| Mars-programmet | Mars probe program |
| Marseillaisen | La Marseillaise |
| Marseille | Marseilles |
| Marselisborg Slot | Marselisborg Palace |
| Marshall | Marshall Amplification |
| Marshall McLuhan | Marshall McLuhan |
| Marshall-planen | Marshall Plan |
| Marshalløerne | Marshall Islands |
| Marsilius af Inghen | Marsilius of Inghen |
| Marstal Kommune | Marstal municipality |
| marsvin | guinea pig |
| Marterpæl | Cross or stake as gibbet on which Jesus died |
| Martin | Martin |
| Martin Andersen Nexø | Martin Andersen Nexø |
| Martin Beck | Martin Beck |
| Martin Bormann | Martin Bormann |
| Martin Brodeur | Martin Brodeur |
| Martin Buber | Martin Buber |
| Martin Heidegger | Martin Heidegger |
| Martin Heinrich Klaproth | Martin Heinrich Klaproth |
| Martin Lawrence | Martin Lawrence |
| Martin Luther | Martin Luther |
| Martin Luther King | Martin Luther King |
| Martin Luther King Day | Martin Luther King Day |
| Martin Mystik | Martin Mystery |
| Martin Niemöller | Martin Niemöller |
| Martin Prince | Martin Prince |
| Martin Scorsese | Martin Scorsese |
| Martin Sheen | Martin Sheen |
| Martin Van Buren | Martin Van Buren |
| Martin Waldseemüller | Martin Waldseemüller |
| Martin Wegelius | Martin Wegelius |
| Martina | Martina |
| Martina Hingis | Martina Hingis |
| Martinique | Martinique |
| Martinus Thomsen | Martinus Thomsen |
| marts | March |
| Marts-Viol | Viola odorata |
| Martyr | Martyr |
| Marvel Comics | Marvel Comics |
| Marvin | Marvin the Paranoid Android |
| Marvin Gaye | Marvin Gaye |
| Marwan Barghouti | Marwan Barghouti |
| Marx Brothers | Marx Brothers |
| Marxisme | Marxism |
| Mary Amelia Ingalls | Mary Ingalls |
| Mary Dyer | Mary Dyer |
| Mary Jane Watson-Parker | Mary Jane Watson |
| Mary Kingsley | Mary Kingsley |
| Mary Moseand | Brigitta McBridge |
| Mary Poppins | Mary Poppins |
| Mary Shelley | Mary Shelley |
| Mary Todd | Mary Todd Lincoln |
| Mary Wollstonecraft | Mary Wollstonecraft |
| Mary-Kate og Ashley Olsen | Mary-Kate and Ashley Olsen |
| Maryland | Maryland |
| Maræere | March |
| María Esther Capovilla | María Capovilla |
| Masada | Masada |
| Maserati | Maserati |
| Maseru | Maseru |
| Masfjorden | Masfjorden |
| Mashhad | Mashhad |
| Maskeballet | Un ballo in maschera |
| Maskeblomst-familien | Scrophulariaceae |
| Maskine | Machine |
| maskineri | mechanism |
| maskinfremstilling | machine manufacture |
| maskingevär | machine gun |
| Maskingevær | Machine gun |
| maskinindustri | mechanical industry |
| Maskiningeniør | Mechanical engineering |
| Maskinkanon | Autocannon |
| maskinkode | machine language |
| Maskinoversættelse | Machine translation |
| Maslows behovspyramide | Maslow’s hierarchy of needs |
| Mason-Dixon line | Mason-Dixon line |
| Massa Carrara | Province of Massa-Carrara |
| Massachusetts | Massachusetts |
| Massachusetts Institute of Technology | Massachusetts Institute of Technology |
| Massakren i Damur | Damour massacre |
| Massakren i Sabra og Shatila | Sabra and Shatila massacre |
| Massakren på Virginia Tech | Virginia Tech massacre |
| Massakren ved Wounded Knee | Wounded Knee Massacre |
| masse | mass |
| Massefylde | Density |
| massemedier | mass media |
| Massespektrometer | Mass spectrometry |
| massetransport | mass transport |
| masseudbud af rekreative aktiviteter | mass recreation |
| masseødelæggelsesvåben | weapon of mass destruction |
| Massospondylus | Massospondylus |
| Massoud Barzani | Massoud Barzani |
| Masterplan | The Masterplan |
| masturbation | masturbation |
| masturbere | masturbate |
| Masuriske Søer | Masurian Lake District |
| Mata Hari | Mata Hari |
| Matador | Monopoly |
| matematik | mathematics |
| Matematikkens filosofi | Philosophy of mathematics |
| Matematikkens historie | History of mathematics |
| matematisk analyse | mathematical analysis |
| Matematisk konstant | Mathematical constant |
| matematisk metode | mathematical method |
| Matematisk pendul | Clock |
| Matematisk skønhed | Mathematical beauty |
| Matematiske funktioner | List of mathematical functions |
| Matematiske symboler | Table of mathematical symbols |
| materialer | material |
| materialers levetid | material life cycle |
| materialevidenskab | materials science |
| Materialisme | Materialism |
| materiel til industrien | industrial equipment |
| Math rock | Math rock |
| MathCAD | Mathcad |
| Mathew Brady | Mathew Brady |
| Mathias | Matthew |
| Mathias Enard | Mathias Enard |
| Mathias Rust | Mathias Rust |
| Mathieu Ladagnous | Mathieu Ladagnous |
| Mathieu Orfila | Mathieu Orfila |
| Mathieu Perget | Mathieu Perget |
| Matilda | Matilda |
| Matisyahu | Matisyahu |
| Matlacuéyetl | Matlalcueitl |
| Matrix | Matrix |
