Idukki Wildlife Sanctuary is Wildlife Sanctuary located in Idukki district of Kerala, India.Idukki Wildlife Sanctuary is a forest area around the catchment area of Idukki Dam (Idukki Reservoir). The clearing of hectares of rainforest for the Idukki hydropower project has caused significant damage to the wildlife there. In view of this, it was decided to protect the surrounding area. Idukki Wildlife Sanctuary is spread over Thodupuzha, and Udumbanchola taluks. The sanctuary covers an area of 105.364 km2 (40.7 sq mi), out of which 72 km2 (27.8 sq mi) is forest land and 33 km2 (12.7 sq mi) is water body of reservoir. The place was declared a wildlife sanctuary on 9 February 1976, as per government order numbered GO.7898/FM3/76/AD/09.02.76. The sanctuary is located at an elevation of 450 to 1272 meters above sea level. The highest peak in the sanctuary is Vanjur Medu which has a height of 1,272 m (4,173.2 ft).

The Idukki, Cheruthoni and Kulamavu dams are located in this sanctuary. The Wildlife Sanctuary Warden is headquartered at Vellapara near Pinea. The nature study camps of the forest department are held here regularly. The district headquarters of Idukki, Painavu is located within the sanctuary.