| En Name: | Sergach |
| Ru Name: | Сергач |
| Coordinates: | 55.5333°N 73°W |
| Map Label Position: | bottom |
| Image Coa: | Coat of Arms of Sergach (Nizhny Novgorod oblast) (1781).png |
| Federal Subject: | Nizhny Novgorod Oblast |
| Adm District Jur: | Sergachsky District |
| Adm Selsoviet Jur: | Sergach |
| Adm Selsoviet Type: | Town of district significance |
| Adm Ctr Of1: | Sergachsky District |
| Adm Ctr Of2: | town of district significance of Sergach |
| Inhabloc Cat: | Town |
| Mun District Jur: | Sergachsky Municipal District |
| Urban Settlement Jur: | Sergach Urban Settlement |
| Mun Admctr Of1: | Sergachsky Municipal District |
| Mun Admctr Of2: | Sergach Urban Settlement |
| Pop 2010Census: | 21386 |
| Established Date: | 1649 |
| Established Title: | First mentioned |
| Current Cat Date: | 1779 |
| Postal Codes: | 607500, 607510, 607511, 607513, 607514 |
Sergach (Russian: Серга́ч) is a town and the administrative center of Sergachsky District in Nizhny Novgorod Oblast, Russia, located on the Pyana River (Sura's tributary), 150km (90miles) southeast of Nizhny Novgorod, the administrative center of the oblast. Population:
The village of Sergach was first mentioned in 1649. It was granted town status in 1779.
Within the framework of administrative divisions, Sergach serves as the administrative center of Sergachsky District.[1] As an administrative division, it is, together with two rural localities, incorporated within Sergachsky District as the town of district significance of Sergach. As a municipal division, the town of district significance of Sergach is incorporated within Sergachsky Municipal District as Sergach Urban Settlement.[2]
The town is located on one of Russia's high-speed railways connecting Moscow with Kazan and has its own railway station.