Thanthai Periyar Wildlife Sanctuary is a proposed protected area located along the area straddling both the Western Ghats and Eastern Ghats in the Erode District of the Indian state of Tamil Nadu.

[3] It will cover a forest area of 801.15 km2 (309.33 sq mi) and will cover parts of Gobichettipalayam and Anthiyur taluks in Erode district in Western Tamil Nadu.

[4] This sanctuary links Nilgiris Biosphere Reserve with Cauvery South Wildlife Sanctuary thus providing the safe movement of elephants and tigers.

[5] The creation of the sanctuary was announced by finance Minister Palanivel Thiagarajan in the 2023 Tamil Nadu State budget.

[6] In January 30, 2024, the sanctuary was notified by the state government covering 80,114.80 hectares.