The Bureau of National Investigations (BNI) is the internal intelligence agency of Ghana. The BNI is an integral part of the National Security Council which oversees matters of the counterintelligence and internal security of Ghana. The BNI has investigative jurisdiction to arrest or detain and interrogate over a wide range of criminal offenses.

Among the duties of the Bureau of National Investigations are dealing with organized crime and financial crime, espionage, sabotage, terrorism, hijacking, piracy, drug trafficking and providing intelligence to counter threats to Ghana's national security and also perform such other functions as may be directed by the President or the council. The BNI is legally a creature of, The Security and Intelligence Agencies Act (Act 526) 1996, having been continued in existence by Section 10 of that Act. The BNI has undisclosed offices in all the sixteen regions of Ghana . In November 2020 the name was officially changed to the National Intelligence Bureau.