Górnośląski Związek Madżonga
 | |
| Country | Poland |
|---|---|
| Location | Katowice |
| Inception | 2016 |
| Leader | Grzybowski Łukasz, President |
| Members | 7 clubs/zones (as of 2018.05) |
Górnośląski Związek Madżonga (Upper Silesian Mahjong Association, USMA) is the second most important mahjong organization in Poland, next to only PLM. It also partly operates in the Czech Republic.
Clubs/regions
- Katowice
- Kraków
- Opole
- Rybnik
- Ostrava
- Piekary Śląskie
- Zagłębie Dąbrowskie