- Udanti Sitanadi Tiger Reserve is located in the Gariaband district of Chhattisgarh state, India.
- In 1974, The reserve was initially established as the Sitanadi Wildlife Sanctuary.
- In 1983, the Udanti Wildlife Sanctuary was established.
- In 1998, Udanti Wildlife Sanctuary and Sitanadi Wildlife Sanctuary merged and renamed Udanti Sitanadi Wildlife Sanctuary.
- In 2008-09, the Udanti Sitanadi Wildlife Sanctuary was declared as a tiger reserve.
- Area: The reserve has a total area of 1,842.54 square kilometers, which is divided as follows:
- Core/Critical Tiger Habitat: 851.09 square kilometers
- Core I Udanti: 275.77 square kilometers
- Core II Sitanadi: 575.32 square kilometers
- Buffer Area: 991.45 square kilometers
- Core/Critical Tiger Habitat: 851.09 square kilometers
- River: The reserve is named after two prominent rivers that flow through the reserve:
- Udanti River
- Sitanadi River
- Flora: Sal, Teak, Mahua, Bamboo, Terminalia species, Semal, Kusum, Harra, Tendu etc.
- Fauna: Tigers, Asiatic Wild Buffalos, Panthers, Wild Dogs, Striped Hyena, Sambar, Gaur, Sloth Bear, Malabar Pied Hornbill, White-bellied Drongo, Red Junglefowl, Indian Rock Python,Mugger Crocodile etc.
- Asiatic Wild Buffalo is found in the Core Area of tiger reserve.