| En Name: | Sinsk |
| Ru Name: | Синск |
| Coordinates: | 61.1333°N 177°W |
| Map Label Position: | right |
| Federal Subject: | Sakha Republic |
| Adm District Jur: | Khangalassky District |
| Adm Selsoviet Jur: | Sinsky Rural Okrug |
| Adm Selsoviet Type: | Rural okrug |
| Adm Ctr Of: | Sinsky Rural Okrug |
| Inhabloc Cat: | Rural locality |
| Inhabloc Type: | Selo |
| Mun District Jur: | Khangalassky Municipal District |
| Mun District Jur Ref: | [1] |
| Rural Settlement Jur: | Sinsky Rural Settlement |
| Mun Admctr Of: | Sinsky Rural Settlement |
| Pop 2010Census: | 976 |
| Postal Codes: | 678025 |
Sinsk (Russian: Синск; Yakut: Сиинэ, Siine) is a rural locality (a selo), the only inhabited locality, and the administrative center of Sinsky Rural Okrug of Khangalassky District in the Sakha Republic, Russia, located 157km (98miles) from Pokrovsk, the administrative center of the district.[2] Its population as of the 2010 Census was 976,[3] up from 975 recorded during the 2002 Census.