| En Name: | Chymnayi |
| Ru Name: | Чымнайи |
| Coordinates: | 62.25°N 166°W |
| Map Label Position: | top |
| Federal Subject: | Sakha Republic |
| Adm District Jur: | Tattinsky District |
| Adm Selsoviet Jur: | Ust-Amginsky Rural Okrug |
| Adm Selsoviet Type: | Rural okrug |
| Adm Ctr Of: | Ust-Amginsky Rural Okrug |
| Inhabloc Cat: | Rural locality |
| Inhabloc Type: | Selo |
| Mun District Jur: | Tattinsky Municipal District |
| Mun District Jur Ref: | [1] |
| Rural Settlement Jur: | Ust-Amginsky Rural Settlement |
| Mun Admctr Of: | Ust-Amginsky Rural Settlement |
| Pop 2010Census: | 573 |
| Postal Codes: | 678657 |
Chymnayi (Russian: Чымнайи; Yakut: Чымнаайы, Çımnaayı) is a rural locality (a selo), the only inhabited locality, and the administrative center of Ust-Amginsky Rural Okrug of Tattinsky District in the Sakha Republic, Russia, located 60km (40miles) from Ytyk-Kyuyol, the administrative center of the district.[2] Its population as of the 2010 Census was 573,[3] down from 594 recorded during the 2002 Census.