Sadaura (Co-ordinates: (30.3833°N 77.2167°E)) is a city and a Panchayat in Yamunanagar district in the northern Indian states of Haryana, which lies to the south of the state of Punjab. It is an old historical town and was known as 'Sadhu-raha' in early days. Sadhaura is situated on the banks of river Nakati. This is the birth place of Peer Buddhu Shah (13 June 1647 - 21 March 1704), a Muslim divine whose real name was Badr ud Din and who was an admirer and ally of Guru Gobind Singh. Peer ji was born in this village on 13 June 1647 in a prosperous Sayyid family of the village.
The history of the area goes back to about 3,000 years. Findings obtained from excavations done here reveal the existence of Gupta and Mughal cultures. Painted grey ware, black slipped ware, Kushana pottery, two bastions made of lakhauri bricks, terra cotta, turquoise and fragments of glass bangles have been excavated from the site.
As of the 2001 India census, Sadaura had a population of 13,181. Males constitute 53% of the population and females 47%. Sadaura has an average literacy rate of 71%, higher than the national average of 59.5%: male literacy is 76%, and female literacy is 66%. In Sadaura, 11% of the population is under 6 years of age.