| En Name: | Nizhniye Sergi |
| Ru Name: | Нижние Серги |
| Coordinates: | 56.6667°N 78°W |
| Map Label Position: | right |
| Image Coa: | Coat of Arms of Nizhnie Sergi (Sverdlovsk oblast).png |
| Federal Subject: | Sverdlovsk Oblast |
| Adm District Jur: | Nizhneserginsky District |
| Adm Selsoviet Jur: | Nizhniye Sergi |
| Adm Selsoviet Type: | Town |
| Adm Ctr Of1: | Nizhneserginsky District |
| Adm Ctr Of2: | town of Nizhniye Sergi |
| Inhabloc Cat: | Town |
| Mun District Jur: | Nizhneserginsky Municipal District |
| Urban Settlement Jur: | Nizhneserginskoye Urban Settlement |
| Mun Admctr Of1: | Nizhneserginsky Municipal District |
| Mun Admctr Of2: | Nizhneserginskoye Urban Settlement |
| Pop 2010Census: | 10336 |
| Established Date: | 1743 |
| Postal Codes: | 623090, 623091, 623093, 623094, 623099 |
| Dialing Codes: | 34396 |
Nizhniye Sergi (ru|Ни́жние Серги́) is a town and the administrative center of Nizhneserginsky District in Sverdlovsk Oblast, Russia, located on a rolling plain surrounded by the Ural Mountains, on the Serga River 120km (80miles) from Yekaterinburg, the administrative center of the oblast. Population:
It was founded in 1743.
Within the framework of the administrative divisions, Nizhniye Sergi serves as the administrative center of Nizhneserginsky District. As an administrative division, it is, together with eleven rural localities, incorporated within Nizhneserginsky District as the Town of Nizhniye Sergi.[1] As a municipal division, the Town of Nizhniye Sergi is incorporated within Nizhneserginsky Municipal District as Nizhneserginskoye Urban Settlement.[2]
The town is an industrial center. The basis of its economy is mainly a plant that produces nails, wires, and other products of ferrous metallurgy. Most of the production output is exported.
Nizhniye Sergi, with its Lake Montayevo health resort, is a popular destination in the Ural region. The health resort is known for its mineral water that includes thirty-seven chemical elements.