Alatyr

General data
- Water type: River
- Progression: Sura -> Volga -> Caspian Sea -> Planet Earth
- Climates: Continental
- Continents: Europe
- Countries: Russia
Description
The Alatyr (Russian: Алатырь) is a river in Mordovia, Russia, and it is the left tributary of the river Sura. It is 296 kilometres long, and has a drainage basin of 11,200 square kilometres. The Alatyr freezes up in November and stays icebound until April. The towns of Ardatov and Alatyr are located on the Alatyr River.