Hazaribagh Wildlife Sanctuary, Wildlife refuge in North Chotanagpur, India.

Hazaribagh Wildlife Sanctuary is a protected area of mixed deciduous forest with sal trees on low hilly terrain at an average altitude of 615 metres, covering 184 km² in Jharkhand, India. It is home to chital, sambar, wild boar, fox, striped hyenas, sloth bears, peafowl and pigeons.

Established in 1955, the sanctuary was unofficially called Hazaribag National Park until 1976, when it was reclassified as a wildlife sanctuary. It had earlier served as a private hunting reserve for the kings of Ramgarh, and the lodge at Rajderwa held enclosures for wild boar, barking deer and nilgai.

The name Hazaribagh comes from words meaning "thousand gardens" in Hindi, reflecting the green character of the landscape. Visitors today can walk through open meadows ringed by forest, where the mix of open and wooded land shapes how animals move and feed.

The nearest railway station is just a few kilometers from the park entrance, making it straightforward to arrive without a private vehicle. Early morning and late afternoon are the best windows for spotting animals in good light.

Rajderwa, a private hunting lodge of the Ramgarh kings, stood inside the forest and kept enclosures of wild boar, barking deer and nilgai. The sanctuary began as that royal hunting reserve, and the lodge is the origin of the protected area rather than a visitor facility.