The term "Corleonesi" refers to a faction of the Sicilian Mafia, specifically originating from the town of Corleone in Sicily, Italy. This group gained notoriety in the 1970s and 1980s under the leadership of figures like Salvatore Riina and Bernardo Provenzano. They are known for their violent tactics and significant influence in organized crime. The Corleonesi played a crucial role in the Mafia's power struggles, particularly during the so-called "Second Mafia War." Their rise led to the consolidation of power within the Cosa Nostra, impacting both criminal activities and law enforcement efforts in Italy.