10 longest reigns in the history of Poland

10. Stanisław August Poniatowski

• reign: 31 years (1764-1795)

9. Bolesław Chrobry

• reign: 33 years (992-1025)

8. August II Mocny

• reign: 33 years (1697-1733)

7. Bolesław Wstydliwy

• reign: 36 years (1243-1279)

6. Bolesław Krzywousty

• reign: 36 years (1102-1138)

5. Kazimierz Wielki

• reign: 37 years (1333 – 1370)

4. Zygmunt I Stary

• reign: 42 years (1506-1548)

3. Kazimierz Jaggielończyk

• reign: 45 years (1447-1492)

2. Zygmunt III Waza

• reign: 45 years (1587-1632)

1. Władysław Jagiełło

• reign: 48 years (1386-1434)