Nerchinsky District () is an administrative and municipal district (raion), one of the thirty-one in Zabaykalsky Krai, Russia. It is located in the center of the krai, and borders with Tungokochensky District in the north, Chernyshevsky District in the east, Baleysky District in the south, and with Shilkinsky District in the west. The area of the district is . Its administrative center is the town of Nerchinsk. Population: 30,694 (2002 Census); The population of Nerchinsk accounts for 52.6% of the district's total population.
The district was established on January 4, 1926.