Kosmonosy
| Kosmonosy | |
|---|---|
| Loreta chapel and Campanilla bell tower | |
| Coordinates: 50°26′24″N 14°55′40″E / 50.44000°N 14.92778°E | |
| Country | Czech Republic | 
| Region | Central Bohemian | 
| District | Mladá Boleslav | 
| First mentioned | 1186 | 
| Government | |
| • Mayor | Eduard Masarčík | 
| Area | |
|  • Total | 11.39 km2 (4.40 sq mi) | 
| Elevation | 243 m (797 ft) | 
| Population  (2025-01-01) | |
|  • Total | 5,247 | 
| • Density | 460/km2 (1,200/sq mi) | 
| Time zone | UTC+1 (CET) | 
| • Summer (DST) | UTC+2 (CEST) | 
| Postal code | 293 06 | 
| Website | www | 
Kosmonosy is a town in Mladá Boleslav District in the Central Bohemian Region of the Czech Republic. It has about 5,200 inhabitants. The town is known for its psychiatric hospital.