Five organizations exemplify organized crime organizations, or “mafias”: the American and Sicilian Cosa Nostras, the Calabrian ‘Ndrangheta, Chinese triads, and Japanese yakuza. Newer syndicates have emerged that are often called organized crime organizations but most importantly differ from the exemplars. Drug trafficking syndicates in Colombia and Mexico are large, wealthy, and extraordinarily violent but have proven fragile in the face of aggressive law enforcement, do not have fully formalized internal structures or elaborate cultures, and only occasionally attempt to exercise political power or provide dispute settlement services in the criminal world. The Primeiro Comando da Capital in Sao Paulo, originally a prisoner self-protection group, comes closer. It has a formalized internal structure and an elaborate culture that permit it partly to control drug markets and provide an alternative justice system in parts of Brazil. Rio de Janeiro’s Commando Vermelho, also originally prison-based and now extensively involved in drug trafficking, has some mafia-like characteristics. Other criminal syndicates are better thought of as “candidate criminal organizations” because they are not fully consolidated (e.g., the Neapolitan camorra), are not fully criminalized (e.g., Hells Angels), or aim mainly at political subversion and have only subsidiary involvement in profit-making crimes (e.g., the Colombian FARC).