Public Security Intelligence Agency

Public Security Intelligence Agency
公安調査庁
Kōanchōsa-chō
Agency overview
FormedJuly 21, 1952 (1952-07-21)
Preceding agencies
  • Investigation Bureau (IB), Home Ministry (1946)
  • Internal Affairs Bureau (IAB), 2nd Office (1948)
  • Special Investigation Board (SIB), Attorney General's Office (1948-1949)
JurisdictionGovernment of Japan
HeadquartersChiyoda, Tokyo, Japan
Employees+/- 1,830 officers (As of 2025)
Annual budget16,672,037,000 Yen (As of 2024)
Minister responsible
Agency executive
  • Masaki Wada, Director-General
Parent agencyMinistry of Justice
WebsiteOfficial Site (in Japanese)

The Public Security Intelligence Agency (公安調査庁, kōanchōsa-chō) is a Japanese intelligence agency under the Ministry of Justice, which collects and analyzes information from domestic and international on threats to national security and works to eliminate those threats based on the Subversive Activities Prevention Act and the Act Regarding the Control of Organizations Which Committed Indiscriminate Mass Murder.

Any investigation conducted by the agency needs to go through the Public Security Examination Commission (PSEC) in order to determine if there is a justification to investigate and clamp down on an organization's activities.

The PSIA's findings are released publicly through the annually-published Naigai Jousei no Kaiko to Tenbo (Situation in Public Security inside and outside Japan and their prospect) as well as regularly-published Kokusai Terrorism Youran (International Terrorism Report).

In recent years, the PSIA is eyed as the basis for the creation of a new foreign intelligence agency.