Japan's largest yakuza organization, founded in 1915 by Harukichi Yamaguchi in Kobe. It engages in extortion, gambling, drug trafficking, and other criminal activities, with operations across Japan and overseas. Membership has declined significantly from its peak, with 3,100 active members as of 2025. The group is known for providing disaster relief after the 1995 Kobe earthquake and the 2011 Tōhoku earthquake and tsunami.
CRIMENET has extracted 115 linkages for this organization, including 24 cooperative ties across 17 organizations, 41 conflicts across 22 organizations, 50 other connections and footprints in 1 country.
Territory: Primarily based in Kobe but has territory all over Japan, including in Nagoya, Tokyo and Hawaii, United States