| En Name: | Sayylyk |
| Ru Name: | Сайылык |
| Coordinates: | 63.85°N 173°W |
| Map Label Position: | right |
| Federal Subject: | Sakha Republic |
| Adm District Jur: | Kobyaysky District |
| Adm Selsoviet Jur: | Mukuchunsky Rural Okrug |
| Adm Selsoviet Type: | Rural okrug |
| Adm Ctr Of: | Mukuchunsky Rural Okrug |
| Inhabloc Cat: | Rural locality |
| Inhabloc Type: | Selo |
| Mun District Jur: | Kobyaysky Municipal District |
| Mun District Jur Ref: | [1] |
| Rural Settlement Jur: | Mukuchunsky Rural Settlement |
| Mun Admctr Of: | Mukuchunsky Rural Settlement |
| Pop 2010Census: | 1221 |
| Postal Codes: | 678321 |
Sayylyk (Russian: Сайылык; Yakut: Сайылык, Sayılık) is a rural locality (a selo), the only inhabited locality, and the administrative center of Mukuchunsky Rural Okrug of Kobyaysky District in the Sakha Republic, Russia, located 315km (196miles) from Sangar, the administrative center of the district.[2] Its population as of the 2010 Census was 1,221,[3] up from 1,156 recorded during the 2002 Census.