The 'Ndrangheta (, Italian: [nˈdraŋɡeta], Calabrian: [(ɳ)ˈɖɽaɲɟɪta]) is a prominent Italian Mafia-type organized crime syndicate based in the peninsular and mountainous region of Calabria and dating back to the late 18th century. It is considered one of the most powerful organized crime groups in the world. Since the 1950s, following wide-scale emigration from Calabria, the organization has established itself worldwide. It is characterized by a horizontal structure made up of autonomous clans known as 'ndrine, based almost exclusively on blood ties. Its main activity is drug trafficking, on which it has a near monopoly in Europe, but it also deals with arms trafficking, money laundering, racketeering, extortion, loan sharking, and prostitution.

The 'Ndrangheta has enjoyed for decades a privileged relationship with the main South American cartels, which consider it their most reliable European partner. It is capable of heavily influencing local and national politics and infiltrating large sectors of the legal economy. In 2013 they purportedly made €53 billion, according to a study from Demoskopika Research Institute. A US diplomat estimated that the organization's drug trafficking, extortion and money laundering activities accounted for at least three percent of Italy's GDP in 2010.