Japan - Designated Boryokudan (Organized Crime Groups)

Japan Designated Boryokudan (指定暴力団) — Japan's officially designated organized crime groups under the Anti-Boryokudan Act (Act on Prevention of Unjust Acts by Organized Crime Group Members, 1991). Currently 25 organizations are designated by Prefectural Public Safety Commissions under National Police Agency authority. Includes Japan's largest criminal syndicates: Yamaguchi-gumi (~3,500 members, 44 prefectures), Sumiyoshi-kai (~2,200 members), and Inagawa-kai (~1,700 members). Total designated membership exceeds 10,000 across all groups. Designation triggers legal restrictions on members' economic activities, prohibits demand for money or favors, and requires financial institutions to screen against these groups. Each entry includes organization name (Japanese and romanized), headquarters address, current leader, territorial scope, and approximate membership. Essential for anti-money laundering screening, Japanese organized crime due diligence, and compliance with the Anti-Boryokudan Act.