Bakhtiyarpur is a city and a notified area in Patna district  in the state of Bihar, India. "'Bakhtiyarpur"' is under the Patna Sahib (Lok Sabha constituency). It is also a vidhan shabha constituency of bihar in Patna District under the Barh sub-division of Bihar state. It is the major railway station in Danapur railway division. In 1193 when Ikhtiyar ad-Din Muhammad bin Bakhtiyar Khilji was on conquest of Bihar, he came to dsetroy Nalanda University. On en-route he destroyed Buddhist monastries of Bakhtiyarpur, and muslim soldiers he left there named place Bakhtiarpur. Later on he destroyed the Odantpuri in Vihar Shree (Bihar Sharif) and Nalanda University. Bakhtiyarpur is major junction of East Central railway. Bihar Chief Minister Nitish Kumar has his paternal village Kalyan Bigha in Bakhtiyarpur area.