| En Name: | Nychalakh |
| Ru Name: | Нычалах |
| Other Name: | Нычалаах |
| Other Lang: | Sakha |
| Coordinates: | 69.9294°N 146.2125°W |
| Map Label Position: | right |
| Federal Subject: | Sakha Republic |
| Adm District Jur: | Allaikhovsky District |
| Adm Selsoviet Jur: | Byyagnyrsky Rural Okrug |
| Adm Selsoviet Type: | Rural okrug |
| Adm Ctr Of: | Byyagnyrsky Rural Okrug |
| Inhabloc Cat: | Rural locality |
| Inhabloc Type: | Selo |
| Mun District Jur: | Allaikhovsky Municipal District |
| Mun District Jur Ref: | [1] |
| Rural Settlement Jur: | Byyagnyrsky Rural Settlement |
| Mun Admctr Of: | Byyagnyrsky Rural Settlement |
| Pop 2010Census: | 155 |
| Pop Latest: | 109 |
| Pop Latest Date: | January 2016 |
| Pop Latest Ref: | [2] |
| Postal Codes: | 678815 |
Nychalakh (Russian: Нычалах; Yakut: Нычалаах, Nıçalaax) is a rural locality (a selo), the only inhabited locality, and the administrative center of Byyagnyrsky Rural Okrug of Allaikhovsky District in the Sakha Republic, Russia, located 190km (120miles) from Chokurdakh, the administrative center of the district. Its population as of the 2010 Census was 117,[3] of whom 60 were male and 57 female, down from 146 recorded during the 2002 Census.[4]