1. Vito Cascioferro (1862–1943 or 1945), often depicted as the "boss of bosses", although such a position does not exist in the loose structure of Cosa Nostra in Sicily, imprisoned by Cesare Mori .


2. Calogero Vizzini (1877–1954), boss of Villalba , was considered to be one of the most influential Mafia bosses of Sicily after World War II until his death in 1954.


3. Giuseppe Genco Russo (1893–1976), boss of Mussomeli , considered to be the heir of Calogero Vizzini.


4. Michele Navarra (1905–1958), boss of the Mafia Family in Corleone from 1940s to 1958


5. Salvatore "Ciaschiteddu" Greco (1923–1978), boss of the Mafia Family in Ciaculli , he was the first "secretary" of the first Sicilian Mafia Commission that was formed somewhere in 1958.


6. Gaetano Badalamenti (1923–2004), boss of the Mafia Family in Cinisi


7. Angelo La Barbera (1924–1975) boss of the Mafia Family in Palermo Centro


8. Michele Greco (1924–2008), boss of the Mafia Family in Croceverde


9. Luciano Leggio (1925–1993), boss of the Corleone clan and instigator of the Second Mafia War


10. Tommaso Buscetta (1928–2000), a mafioso who turned informant in 1984. Buscetta's evidence was used to great effect during the Maxi-Trials .


11. Salvatore Riina (born 1930), also known as Totò Riina, emerged from the Second Mafia War as the "boss of bosses" until his arrest in 1993.


12. Bernardo Provenzano (born 1933), successor of Riina as head of the Corleonesi faction and as such was considered one of the most powerful bosses of the Sicilian Mafia. Provenzano was a fugitive from justice since 1963. He was captured on 11 April 2006 in Sicily. [ 162 ] Before capture, authorities had reportedly been "close" to capturing him for 10 years.


13. Stefano Bontade (1939–1981), boss of the Santa Maria di Gesù clan. His murder by the Corleonesi in 1981 inaugurated the Second Mafia War .


14. Leoluca Bagarella (born 1941), member of the Mafia Family in Corleone arrested in 1995


15. Salvatore Lo Piccolo (born 1942), considered to be one of the successors of Provenzano.


16. Salvatore Inzerillo (1944–1981), boss of the Mafia Family in Passo di Rigano


17. Giovanni 'Lo Scannacristiani' Brusca (born 1957), who was involved in the murder of Giovanni Falcone .


18. Matteo Messina Denaro (born 1962), considered to be one of the successors of Provenzano.