Qudyal
| Qudyalchay | |
|---|---|
| The arch bridge over the Qudyalchay connecting Quba (left) and Qırmızı Qəsəbə (right) | |
| Native name | Qudyalçay (Azerbaijani) | 
| Location | |
| Country | Azerbaijan | 
| Physical characteristics | |
| Source | Greater Caucasus | 
| • coordinates | 41°15′42″N 48°19′25″E / 41.2616°N 48.3236°E | 
| • elevation | 3,000 m (9,800 ft) | 
| Mouth | Caspian Sea | 
|  • location | Niyazoba | 
|  • coordinates | 41°31′26″N 48°56′27″E / 41.5239°N 48.9408°E | 
|  • elevation | -30 m (98 ft) | 
| Length | 108 km (67 mi) | 
| Basin size | 799 km2 (308 sq mi) | 
The Qudyal or Qudyalchay (Azerbaijani: Qudyalçay) is a river in north-eastern Azerbaijan. It flows through the districts of Quba and Khachmaz.