Nahar Wildlife Sanctuary is situated in the Kosli Subdivision of Rewari district of Haryana, India.

Forests Department, Haryana of Government of Haryana officially notified this as Wildlife Sanctuary on 30 January 1987.

This is one of the last habitats for Blackbuck in particular, and for other endangered species in general.

Nahar Block consists of 46 Gram Panchayats and 49 Villages and 123303 is its pin code number.

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