Kwidzyn
| Kwidzyn | |
|---|---|
| Coordinates: 53°44′9″N 18°55′51″E / 53.73583°N 18.93083°E | |
| Country | Poland | 
| Voivodeship | Pomeranian | 
| County | Kwidzyn | 
| Gmina | Kwidzyn (urban gmina) | 
| Established | 11th century | 
| Town rights | 1233 | 
| Government | |
| • Mayor | Sebastian Kasztelan | 
| Area | |
|  • Total | 21.82 km2 (8.42 sq mi) | 
| Elevation | 42 m (138 ft) | 
| Population  (2024) | |
|  • Total | 36,731 | 
| Time zone | UTC+1 (CET) | 
| • Summer (DST) | UTC+2 (CEST) | 
| Postal code | 82-500 | 
| Area code | +48 55 | 
| Vehicle registration | GKW | 
| National roads | |
| Voivodeship roads | |
| Website | https://www.kwidzyn.pl | 
Kwidzyn ([ˈkfʲid͡zɨn]; German: Marienwerder; Latin: Quedin; Old Prussian: Kwēdina) is a town in northern Poland on the Liwa River. With a population of 36,731, it is the capital of Kwidzyn County in the Pomeranian Voivodeship.