Society ("spolky") categories: M
- McLaren club
- music association
- men's association
- modelers club
- motorcycle association
- mountaineers club
- monkey breeders club
- model makers' club
- municipal association
- movement
- modern pentathlon association
- model makers' association
- Moto Guzzi club
- mushroom growers' club
- Mongols in Czech Republic club
- motor racing club
- mountaineering club
- medical club
- mountaineering section
- mycological club
- Mongolian association
- monkey breeders' club
- Mazda club
- museum
- mycology club
- municipality restoration club
- music club
- mycological group
- men's club
- mushroom growers club
- motorcycle club
- military club
- mountaineering association
- Maybach club
- municipality restoration society
- Mustang club
- modern pentathlon club
- Mercedes-Benz club
- MG club
- Mercedes club
- municipal club
- music group
- military tech club
- mycology circle
- Maserati club
- mycological association
- movementarian association
- Mini club
- motorcyclists club
- martial arts club
- Mitsubishi club