| Mramor Burial Mound |
1 |
| mudbricks |
1 |
| Muhammad Al-Idrisi |
5 |
| Muhammad bin Tughluq |
2 |
| Muldava |
1 |
| Muldava Monastery "St. Petka" |
1 |
| mule |
2 |
| multibeam echosounder |
1 |
| Mumius Sisana Rutilianus |
2 |
| mummification |
1 |
| mummy |
3 |
| Munich |
4 |
| municipal funding |
12 |
| municipium |
3 |
| murals |
41 |
| Murder on the Orient Express |
1 |
| Mursalevo |
16 |
| Mursalevo Neolithic Settlement |
7 |
| Muse Calliope |
1 |
| Musee des Confluences |
1 |
| Muselievo |
3 |
| museum |
3 |
| Museum Center of Thracian Art in the Eastern Rhodope Mountains |
2 |
| Museum of Black Civilizations |
1 |
| Museum of Black Sea Civilizations |
1 |
| Museum of Bulgaria’s National Revival and the Constituent Assembly of 1879 |
8 |
| Museum of Crafts and Applied Arts |
1 |
| Museum of Early Christianity |
1 |
| Museum of Military Glory |
1 |
| Museum of National History and Archaeology in Constanta |
1 |
| Museum of Paleontology |
1 |
| Museum of Religions Karlovo |
2 |
| Museum of Roman Mosaics Devnya |
5 |
| Museum of Sofia History |
18 |
| museum poster |
1 |
| museum theft |
1 |
| museum workers |
1 |
| Mushovitsa Mound |
1 |
| Musina |
5 |
| Musina Cave |
4 |
| Muslim |
5 |
| Muslim Bektashi |
1 |
| Muslim Brotherhood |
1 |
| Muslim shrine |
2 |
| Muslims |
1 |
| Mussaurus |
1 |
| Mustafa Demirel |
1 |
| Mustang fighter jet |
1 |
| mute swan (Cygnus olor) |
1 |
| Mycenae |
8 |
| Mycenaean helmet |
1 |
| Mycenaean pottery |
1 |
| Mykolaiv |
1 |
| Myotragus balearicus goat |
1 |
| Myrmidons |
1 |
| mythical creatures |
3 |
| mythology |
1 |
| Mythraeum |
2 |
| Myumyun Iskender |
3 |
| nacre (mother of pearl) |
2 |
| Nadezhda Atanasova |
1 |
| Nadezhda Boteva |
3 |
| Nadezhda Kecheva |
2 |
| Nadezhda Todorova |
1 |
| Nadka Savova |
2 |
| Nagoya |
4 |
| Naha |
1 |
| Nancy Schiller |
1 |
| Nantes |
1 |
| naos |
1 |
| Naples |
1 |
| Napoleon I |
1 |
| Napoleonic Wars |
1 |
| narthex |
1 |
| Nartsis Torbov |
7 |
| Nasiriyah |
1 |
| Natalia Ivanova |
2 |
| Nataliya Menshikova |
6 |
| National Academy of Art |
1 |
| National Academy of Sciences of the USA |
1 |
| National Academy of Sciences of Ukraine |
1 |
| National Archaeological Conference |
1 |
| National Association for Metal Detecting |
1 |
| National Center for Museums Galleries and Arts |
1 |
| National Church Museum of History and Archaeology |
1 |
| National Front for Salvation of Bulgaria |
1 |
| National Gallery of Art |
3 |
| National Gallery of Arts |
5 |
| National Historical and Archaeological Preserve "Madara" |
5 |
| National Historical and Archaeological Preserve Pliska |
7 |
| National History Museum |
8 |
| national holiday |
15 |
| National Institute and Museum of Archaeology |
253 |
| National Institute for Cultural Heritage Properties |
28 |
| National Institute of Anthropology |
1 |
| National Liberation |
26 |
| National Library "St. Cyril and St. Methodius" |
2 |
| National Museum and Institute of Anthropology |
1 |
| National Museum of History |
122 |
| National Museum of Military History |
1 |
