| En Name: | Yefremovo |
| Ru Name: | Ефремово |
| Coordinates: | 60.4667°N 140°W |
| Map Label Position: | right |
| Federal Subject: | Sakha Republic |
| Adm District Jur: | Amginsky District |
| Adm Selsoviet Jur: | Amgino-Nakharinsky Rural Okrug |
| Adm Selsoviet Type: | Rural okrug |
| Inhabloc Cat: | Rural locality |
| Inhabloc Type: | Selo |
| Mun District Jur: | Amginsky Municipal District |
| Mun District Jur Ref: | [1] |
| Rural Settlement Jur: | Amgino-Nakharinsky Rural Settlement |
| Pop 2010Census: | 29 |
Yefremovo (Russian: Ефремово) is a rural locality (a selo), one of two settlements, in addition to Onnyos and Tegyulte, in Amgino-Nakharinsky Rural Okrug of Aldansky District in the Sakha Republic, Russia. It is located 74km (46miles) from Amga, the administrative center of the district and 7km (04miles) from Onnyos, the centre of the settlement. Its population as of the 2010 Census was 29;[2] up from 23 recorded in the 2002 Census.[3]