| Official Name: | Somoniyon |
| Native Name: | Сомониён |
| Pushpin Map: | Tajikistan |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Tajikistan |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name: | Tajikistan |
| Subdivision Name1: | Districts of Republican Subordination |
| Subdivision Type2: | District |
| Subdivision Name2: | Rudaki District |
| Population As Of: | January 2020 |
| Population Total: | 25200 |
| Coordinates: | 38.4422°N 68.7769°W |
Somoniyon (tg|Сомониён,) is a town in Tajikistan. It is the administrative capital of Rudaki District, one of the Districts of Republican Subordination, lying 17 km south of the national capital of Dushanbe and just east of the river Kofarnihon.[1] The population of the town is 25,200 (January 2020 estimate).[2]
The village was established in 1938 under the name of imeni Karakhon Sardorova (ru|имени Карахон Сардорова, literally "village named after Karakhon Sardorov"), commemorating one of the prominent figures in the struggle for the Soviet rule against the Basmachi. In 1970, on the occasion of Lenin's 100th anniversary, it was renamed Lenin or Leninskiy. In 1998, it was renamed Somoniyon in honor of the 1100th anniversary of the Samanid Empire. Locals sometimes refer to the village by the historical name Kuktosh or Koktash (Uzbek for "blue stone").