The Lexicon entries below explore significant Holocaust-related events, topics, places and personalities and are based on Yad Vashem's Encyclopedia of the Holocaust.
- Macedonia and Thrace
- Mach, Alexander
- Majdanek
- Majercik, Michal
- Makovski, Iosif Isakovich
- Maly Trostinets
- Mashkautsa, Shabtai Mendelevich
- Masing, Uko
- Mauritius
- Mauthausen
- Mayer, Saly
- McDonald, James Grover
- Mechelen
- Medical Experiments
- Mein Kampf
- Melnyk, Andrei
- Memel
- Menczer, Aron
- Mengele, Josef
- Merin, Moshe
- Minsk
- Mir
- Mischlinge
- Mittelstelle fuer Juedische Erwachsenenbildung
- Mogilev-Podolski
- Molotov, Viacheslav Mikhailovich
- Montelupich Prison
- Morgenthau, Henry, Jr
- Morocco
- Mosley, Sir Oswald
- Mudrik, David
- Mueller, Heinrich
- Munich
- Munich Conference
- Muselmann
- Museums and Memorial Institutes
- Music, The Holocaust in
- Mussert, Anton Adrian
- Mussolini, Benito