Chillar is a village in Rewari district, Haryana, India, formerly in Gurgaon Division. It is on the Rewari-Pataudi road 15.5 kilometres (9.6 mi) north of Rewari. It is 318 kilometres (198 mi) from State capital of Chandigarh. Its postal head office is at Khalilpur. It is surrounded by Pataudi Tehsil to the east, Jatusana Tehsil to the west, Farrukh Nagar Tehsil to the north, and Bawal Tehsil to the south.

According to Rural gazetteer of Delhi, Its contemptuously an village lies between Upper Doab boundaries of westernmost frontier province of Rewari near feudatory settlement of Phulkian Sardars of Jat-Sikh household at Mahendragarh subsiding the Bagri region which founding stone was landed down by Jattki or Jutt girl which episodically got seprated from Dalal Sikh-Jatha^{[additional citation(s) needed]}

As of 2011 India census, Chillar had a population of 3089 in 609 households. Males (1597) constitute 51.69% of the population and females (1492) 48.3%. Chillar has an average literacy (2189) rate of 70.86%, lower than the national average of 74%: male literacy (1272) is 58.1%, and female literacy (917) is 41.89% of total literates (2189). In Chillar, Rewari, 12.91% of the population is under 6 years of age (399).^[1]

• Hondh-Chillar massacre
• Chillar (surname)
• Dalal