| En Name: | Saydy |
| Ru Name: | Сайды |
| Loc Name1: | Сайдыы |
| Loc Lang1: | Sakha |
| Coordinates: | 68.7°N 134.45°W |
| Map Label Position: | right |
| Federal Subject: | Sakha Republic |
| Adm District Jur: | Verkhoyansky District |
| Adm Selsoviet Jur: | Eginsky Rural Okrug |
| Adm Selsoviet Type: | Rural okrug |
| Adm Ctr Of: | Eginsky Rural Okrug |
| Inhabloc Cat: | Rural locality |
| Inhabloc Type: | Selo |
| Mun District Jur: | Verkhoyansky Municipal District |
| Mun District Jur Ref: | [1] |
| Rural Settlement Jur: | Eginsky Rural Settlement |
| Mun Admctr Of: | Eginsky Rural Settlement |
| Pop 2010Census: | 560 |
| Postal Codes: | 678521 |
Saydy (Russian: Сайды; Yakut: Сайдыы, Saydıı) is a rural locality (a selo), the administrative center of, and one of two settlements in addition to Osokhtokh in Eginsky Rural Okrug of Verkhoyansky District in the Sakha Republic, Russia, located 193km (120miles) from Batagay, the administrative center of the district. Its population as of the 2010 Census was 560;[2] down from 684 recorded in the 2002 Census.[3]