Bhiwani District is one of the 21 districts of Haryana state in northern India. Created on 22 December 1972, the district was largest district of state by area before the creation of charkhi dadri as a separate district as it occupied an area of 5,140 square kilometres (1,980 sq mi) and administered 442 villages with a population of 1,629,109. sirsa is now the largest district of the state. The district headquarters is the city of Bhiwani, which is around 124 kilometres (77 mi) from the capital Delhi. Other major towns in the district are Siwani, Charkhi Dadri, Loharu, Tosham, Bawani Khera and Badhra.
As of 2011 it is the third most populous district of Haryana (out of 21), after Faridabad and Hisar.
The district is named after its headquarters, Bhiwani city. Bhiwani city, it is believed, was founded by a Rajput named Neem after his wife Bhani. The name Bhani later changed to Bhiyani and subsequently to Bhiwani.
Excavations (1968–73 and 1980–86) in the village of Mitathal in Bhiwani have unearthed evidence of pre-Harappan and Harappan (Indus Valley Civilization) culture in the area. Near the village of Naurangabad, about 10 kilometres (6.2 mi) east of Bhiwani city, preliminary diggings in 2001 revealed artifacts including coins, tools, sieves, toys, statues and pots up to 2,500 years old. According to archaeologists the presence of coins, coin moulds, statues and design of the houses, suggests that a town existed here sometimes in the Kushan, Gupta and the Youdheya period till 300 BC.