The Bulgarian National Bank (Bulgarian: Българска народна банка, romanized: Balgarska narodna banka, IPA: [ˈbɤɫɡɐrskɐ nɐˈrɔdnɐ ˈbaŋkɐ]) is the central bank of the Republic of Bulgaria with its headquarters in Sofia. The BNB was established on 25 January 1879.

It is an independent institution responsible for issuing all banknotes and coins in the country, overseeing and regulating the banking sector and keeping the government's currency reserves. The BNB is also the sole owner of the Bulgarian Mint. The governor is Dimitar Radev. The bank has a key role in Bulgarian economy. Since October 1, 2007 the bank is a member of European system of central banks. The governor of BNB is a member of General Assembly of European central bank. It is the 13 oldest central bank in the world.