Yakuza, also called bōryokudan or gokudō, Japanese gangsters, members of what are formally called bōryokudan (“violence groups”), or Mafia-like criminal organizations. In Japan and elsewhere, especially in the West, the term yakuza can be used to refer to individual gangsters or criminals as well as to their organized groups and to Japanese organized crime in general. Yakuza adopt samurai-like rituals and often bear elaborate body tattoos. They engage in extortion, blackmail, smuggling, prostitution, drug trafficking, gambling, loan sharking, day-labour contracting, and other rackets and control many restaurants, bars, trucking companies, talent agencies, taxi fleets, factories, and other businesses in major Japanese cities. They are also involved in criminal activities worldwide.
The word yakuza (“good for nothing”) is believed to have derived from a worthless hand in a Japanese card game similar to baccarat or blackjack: the cards ya-ku-sa (“eight-nine-three”), when added up, give the worst possible total. The origin of the yakuza themselves is difficult to determine, but they are thought to have descended either from gangs of rōnin (masterless samurai) who turned to banditry or from bands of do-gooders who defended villages from those same wayward samurai during the early 17th century. Their lineage may also be traced to bands of grifters and gamblers in Japan’s feudal period.