The Achanakmar Wildlife Sanctuary is an Indian sanctuary in Bilaspur district, Chhattisgarh State. It had been established in 1975, under the provisions of the Indian Wildlife Protection Act of 1972, and declared a Tiger Reserve under Project Tiger, in 2009. It is a part of the Achanakmar-Amarkantak Biosphere Reserve.
Linked by the hilly Kanha-Achanakmar Corridor to the tiger reserve in Kanha, Madhya Pradesh, the sanctuary comprises 557.55 km2 of forest. The park is part of Mungeli And Bilaspur Forest Division in northwest Chhattisgarh, around 50 km north of Mungeli. The nearest railway station is at Belgahna. Achanakmar can be reached from Pendra Road and Bilaspur railway stations. Achanakmar has a restaurant, a coffee house and many other facilities. The sanctuary is close to Amarkantak, the source of the Narmada River.
Forest vegetation mainly comprises Sal, Saja, Bija, and Bamboo.
The sanctuary is home to the Bengal tiger, Indian leopard, gaur, chital, striped hyena, Indian jackal, sloth bear, Ussuri dhole, sambar, nilgai, four-horned antelope, chinkara, blackbuck, Indian muntjac and wild boar, among other species.