Tigirekskiy Nature Reserve is a Russian 'zapovednik' (strict nature reserve) in the northwest mid-level mountains of the Altai-Sayan region. The reserve was established for the protection and study of the relic pre-glacial dark taiga of the higher elevations, and the mountain-steppe of the river valleys and lower regions. The site features extensive karst landscape and caves. The reserve is situated in the Zmeinogorsky, Tretyakovsky and Krasnoshchyokovsky districts of Altai Krai. It was formally established in 1999, and covers a total area of 40,693 ha (157.12 sq mi).

The Tigirekskiy Reserve occupies the watershed of the right tributaries of the Charysh River and the headwaters of the Aley River, including the Tigerksky range of mountains, in the northwest of the Altai-Sayan mountains. The terrain is mostly mid-level mountains with domed tops. The river valleys are deep with steep, precipitous sides.

·         Beloretsk The upper reaches of the river White. Located in Zmeinogorsky District.

·         Tigireksky Adjacent to the village from the south Tigirek. Located in Krasnoshchyokovsky District.

·         Hanharinsky The upper reaches of the river Big Hanhara. Located in Krasnoshchyokovsky District.

The reserve is bounded on the south by the northwest border of Kazakhstan; the region to the north stretches into steppe, and the higher Altai mountains are the east. Altitudes in the reserve run from 500 meters to 2,000 meters, the highest peak is the top of Tigireksky Ridge (2,013 m (6,604 ft)). The north and western sections of the reserve are lower and smoother; the high ridges in the east have more rocky terrain at high altitudes.