Bureau of Special Investigation

The Bureau of Special Investigation (Burmese: အထူးစုံစမ်းစစ်ဆေးရေးဦးစီးဌာန; BSI) is the national civilian intelligence and security agency of Republic of the Union of Myanmar tasked with advancing internal security through collecting and analyzing intelligence from internal and external and conducting clandestine and covert operations, counterintelligence, counter-revolutionary, counterterrorism, internal security, and surveillance and suppression those who disagree with the government. BSI is a department of the Myanmar Ministry of Home Affairs (MOHA).

It is one of three main entities in the Republic of the Union of Myanmar Intelligence Community, along with Office of the Chief of Military Security Affairs (OCMSA) and Special Intelligence Department (SID), all three of which are responsible for clandestine and covert operations, counterintelligence, counter-revolutionary, counterterrorism, executive protection, intelligence assessment, intelligence gathering, internal security, surveillance and suppression those who disagree with the government, and threat assessment to national security.

The Bureau of Special Investigation is responsible for analysis and development intelligence gathering and counterintelligence systems to create internal security, clandestine and covert operations, counter-revolutionary, counterintelligence, counterterrorism, creation a civilian security network intelligence, cybersecurity to prevent civilian intelligence leaks when systems are hacked, executive protection (especially the Minister of Home Affairs and the President of the Republic of the Union of Myanmar), intelligence gathering and assessment on threats to national security that are under the responsibility of the civilian law enforcement authority, internal security, investigate and interrogation serious crimes, political warfare, support irregular warfare operations, surveillance and suppression those who disagree with the government, and is the national's central intelligence affair for coordinating intelligence activities. Its director answers directly to the Minister of Home Affairs.

The bureau has authority to investigate legal offences, including financial crimes, such as inappropriate trading, tax evasion, and government officer corruption allegations. The Director General of BSI is U Maung Maung Kyaw. Its headquarters is in Naypyidaw.