The province had some major bosses !

Trapani province
Alcamo
Vincenzo Milazzo (died 1992)[31]
Fillipo Rimi (1923-2014)[32]
Vincenzo Rimi (1902–1975)[32]

Castellammare del Golfo
Joseph Bonanno (1905–2002)
Giovanni Bonventre (1901–1970)
Vito Bonventre (1875–1930)
Stefano Magaddino (1891–1974)
Salvatore Maranzano (1886–1931)
Joseph Barbara (1905–1959)
Sebastiano DiGaetano (1862–1912)

Castelvetrano
Francesco Messina Denaro (1928-1998)
Matteo Messina Denaro (1962–2023)
Alfonso Caruana (born 1946)

Mazara del Vallo
Mariano Agate (1939-2013)
Andrea Manciaracina (born 1962)

Salemi
Salvatore Miceli (born 1946)
Antonio Salvo (1929–1986)
Ignazio Salvo (1932–1992)

Trapani
Vincenzo Virga (born 1936)