| En Name: | Deputatsky |
| Ru Name: | Депутатский |
| Loc Name1: | Депутатскай |
| Loc Lang1: | Yakut |
| Coordinates: | 69.3167°N 198°W |
| Map Label Position: | right |
| Federal Subject: | Sakha Republic |
| Adm District Jur: | Ust-Yansky District |
| Adm Selsoviet Jur: | Deputatsky |
| Adm Selsoviet Type: | Settlement |
| Adm Ctr Of1: | Ust-Yansky District |
| Adm Ctr Of2: | Settlement of Deputatsky |
| Inhabloc Cat: | Urban-type settlement |
| Mun District Jur: | Ust-Yansky Municipal District |
| Urban Settlement Jur: | Deputatsky Urban Settlement |
| Mun Admctr Of1: | Ust-Yansky Municipal District |
| Mun Admctr Of1 Ref: | [1] |
| Mun Admctr Of2: | Deputatsky Urban Settlement |
| Pop 2010Census: | 2983 |
| Established Date: | 1951 |
| Current Cat Date: | 1958 |
| Postal Codes: | 678540, 678549 |
| Website: | http://www.sakha.gov.ru/deputatsky |
| Bodystyle: | width:23.5em; |
| Deputatsky population | |
| Label1: | 2010 Census |
| Data1: | 2,983 |
| Label2: | 2002 Census |
| Data2: | 3,602 |
| Label3: | 1989 Census |
| Data3: | 13,305 |
| Label4: | 1979 Census |
| Data4: | 5,331 |
Deputatsky (Russian: Депута́тский; Yakut: Депутатскай|translit=Deputatskay) is an urban locality (an urban-type settlement) and the administrative center of Ust-Yansky District in the Sakha Republic, Russia, located in the Selennyakh Range, about 930km (580miles) north-northeast of Yakutsk, the capital of the republic. As of the 2010 Census, its population was 2,983.
Deputatsky is spread out along a 10km (10miles) section of the Oyun-Unguokhtakh River, up to its mouth on the Irgichyan, which becomes a source of the Uyandina River.
It was founded in 1951 as a mining settlement, exploiting nearby deposits of tin.[2] In its early years, its workforce included Gulag prisoners. In 1958, Deputatsky was granted urban-type settlement status.[3] In 1967, it replaced the selo of Kazachye as the administrative center of Ust-Yansky District.
Due to the downturn in the mining industry following the dissolution of the Soviet Union, more than three-quarters of population left during the 1990s. However, mine production continued and the population decline slowed down.
Within the framework of administrative divisions, the urban-type settlement of Deputatsky[4] serves as the administrative center of Ust-Yansky District. As an administrative division, it is incorporated within Ust-Yansky District as the Settlement of Deputatsky. As a municipal division, the Settlement of Deputatsky is incorporated within Deputatsky Municipal District as Deputatsky Urban Settlement.[5]
Deputatsky is reachable by road to Ust-Kuyga, 250km (160miles) away on the Yana River. From there, a winter road (zimnik) leads through Batagay and the Verkhoyansk Range to Topolinoye, from where the Kolyma Highway is accessible.
An unmaintained winter road heads east from Deputatsky down the Uyandina Valley to Belaya Gora.
A small airport on the northern edge of the settlement (ICAO-Code UEWD) provides air service.
Deputatsky has an extreme subarctic climate (Köppen climate classification Dfc bordering on Dfd). Winters are prolonged and bitterly cold, with up to seven months of sub-zero high temperatures, so that the soil remains permanently frozen. Permafrost and tundra cover most of the region. Average temperatures range from in January to in July.