Prisurski Nature Reserve (Russian: Присурский заповедник) (also Prisursky) is a Russian zapovednik (strict ecological reserve) in the northern Volga Uplands of the East European Plain. It protects for study an area of forest-steppe and mixed forest, with sections in different parts of Chuvashia. The largest sector is the Alatyrski Nature Reserve, located in the valley of the Sura River (mixed coniferous and deciduous forests), and two small steppe sections to the southeast (Batyrevski and Jaltsjikski reserves). The reserve is situated in the Alatyr, Chuvash Republic District of the Chuvash Republic. It was set aside as a reserve in 1995 to protect the largest and least disturbed area of southern taiga lowland forest in Chuvashia, as well as steppe habitat at the northern edge of its range.