Bhabua (Hindi: , Urdu: ) is a city and a municipality in Kaimur district in the state of Bihar, India. It is the headquarters of Kaimur district in the state of Bihar, in India. The district has 14 police stations and covers an area of about 340447 Hectares, Geographically, the district can be divided into two parts viz. (i) Hilly area and (ii) Plain area.
The district has close linkage with the history of Shahabad, which was its parent district also. The old district of Shahabad had four subdivisions of which Bhabua was one. The present district of Kaimur has been formed from the whole of this Bhabua subdivision. Kaimur has an old and interesting history. In pre-historic days the plateau region of the district has been the abode of the aboriginals whose chief representatives now are the Bhars, the Cheros and the Savers. According to some legends, the Kharwars were the original settlers in the hilly tracts of Rohtas. The Ovaons also claim that they ruled over the stretch falling between Rohtas and Patna. One local legend also connects Sasaram the present headquarters of Rohtas with king Sahasrarjun, who was killed by Saint Parshuram in a fight.