Patna Circle is one of the oldest Circle of Archaeological Survey of India. Its jurisdiction extends to the whole of Bihar State and 14 district of eastern Uttar Pradesh.

There are 183 national monuments under the jurisdiction of Patna Circle out of which 71 falls in Bihar and 112 in Uttar Pradesh. For administrative convenience Patna Circle is divided into nine Sub Circles – three in Uttar Pradesh i.e. Sarnath, Kushinagar and Jaunpur and six in Bihar namely Sasaram, Vaisali, Kumrahar, Nalanda, Rajgir and Antichak.