Buxa Tiger Reserve (BTR) lies in Alipurduar sub-division of Jalpaiguri district of West Bengal. Its northern boundary runs along the international border with Bhutan. The Sinchula hill range lies all along the northern side of BTR and the Eastern boundary touches that of the Assam State. National Highway No.31 C roughly runs along its southern boundary. It is the eastern most extension of extreme bio-diverse North-East India & represents highly endemic Indo-Malayan region. The Phipsu Wildlife Sanctuary of Bhutan is contiguous to North of BTR. Manas National Park lies on east of BTR. BTR, thus, serves as international corridor for elephant migration between India and Bhutan. To the south-west, the Chilapata Forests form an elephant corridor to the Jaldapara Wildlife Sanctuary. The reserve encompasses as many as eight forest types.
Buxa Tiger Reserve is situated in Alipurduar Sub-division of Aliurduar District, West Bengal. It comprises of the entire erstwhile Buxa Forest Division (702.44 km2), and a part of Cooch- Behar Forest Division (58.43 km2). The Reserve lies between latitudes 26°30′ and 26°55′ North and longitudes 89°20′ and 89°55′ East.