Bihar Gramin Bank (BGB) is an Indian Regional rural bank (RRB) in the state of Bihar, India established on 1 May 2025[1][2] by the amalgamation of two RRBs namely Dakshin Bihar Gramin Bank and Uttar Bihar Gramin Bank.[3] under The "One State, One RRB"[4] policy of government of India. The bank operates in all 38 districts of Bihar state and has 2885 branches as on 1 May 2025.[5] It is under the ownership of Ministry of Finance, Government of India[6]
It functions under Regional Rural Banks' Act 1976 and is sponsored