| En Name: | Kysyl-Syr |
| Ru Name: | Кысыл-Сыр |
| Coordinates: | 62.5333°N 174°W |
| Map Label Position: | right |
| Federal Subject: | Sakha Republic |
| Adm District Jur: | Namsky District |
| Adm Selsoviet Jur: | Khomustakhsky 1-y Rural Okrug |
| Adm Selsoviet Type: | Rural okrug |
| Adm Ctr Of: | Khomustakhsky 1-y Rural Okrug |
| Inhabloc Cat: | Rural locality |
| Inhabloc Type: | Selo |
| Mun District Jur: | Namsky Municipal District |
| Mun District Jur Ref: | [1] |
| Rural Settlement Jur: | Khomustakhsky 1-y Rural Settlement |
| Mun Admctr Of: | Khomustakhsky 1-y Rural Settlement |
| Pop 2010Census: | 1502 |
| Postal Codes: | 678393 |
Kysyl-Syr (Russian: Кысыл-Сыр; Yakut: Кыһыл Сыыр, Kıhıl Sıır) is a rural locality (a selo), the only inhabited locality, and the administrative center of Khomustakhsky 1-y Rural Okrug of Namsky District in the Sakha Republic, Russia, located 22km (14miles) from Namtsy, the administrative center of the district.[2] Its population as of the 2010 Census was 1,502,[3] up from 1,351 recorded during the 2002 Census.