Sakteng Wildlife Sanctuary is a wildlife sanctuary in Bhutan, located in Merak and Sakteng Gewogs of Trashigang District and just crossing the border into Samdrup Jongkhar District. It is one of the country's protected areas and is listed as a tentative site in Bhutan's Tentative List for UNESCO inclusion. The sanctuary has three ranges: Merak Range, Sakteng Range, and Joenkhar Range. Sakteng Range is the largest range with an area of 333.67 sq.km, followed by Merak Range (287.352 sq.km) and Joenkhar Range (121.442 sq.km).