Tigireksky Nature Reserve, Nature reserve in Altai Krai, Russia

Tigireksky Nature Reserve covers 41,505 hectares across three sections: Beloretsky in the upper reaches of the Belaya River, Tigireksky south of Tigirek village, and Khanharinsky in the upper Bolshaya Khanhara. The terrain is mid-mountain with domed summits; the highest points are Mount Chyornaya (2,013 m) and Mount Razrabotnaya (1,962 m).

Established by Russian government decree No. 1342 of 4 December 1999, the reserve was created to protect the relic pre-glacial dark taiga and the mountain-steppe of the middle mountains of the Western Altai. It is one of the youngest zapovedniks in Russia and belongs to the Altai-Sayan Ecoregion association of reserves and national parks.

The reserve's name comes from the village of Tigirek, whose residents work with reserve staff on environmental education. A public nature centre operates in Baranovka, in the Zmeinogorsk district, and the reserve runs guided excursions along approved routes. Since 2011 the 70 km "Bolshoy Tigirek" trail crosses the reserve, taking four days to walk.

Visitors must obtain special permits to access the protected zones and can camp only at designated paid sites while following strict conservation rules. Advance planning is important before attempting to explore the area.

The area marks a transition zone between the Altai-Sayan mountain systems and the broad steppes of Kazakhstan and Siberia. This geographical position allows plant species from the Tertiary period to still grow here.