This is an incomplete list of crime bosses. This list is arranged alphabetically by last name, and broken into categories by year that an individual is believed to have assumed leadership of a criminal organization

19th century Shimizu Jirocho (1820-1893), natural causes James Dolan (1848–1898), natural causes Johnny Dolan (1849–1876), executed Monk Eastman (1875–1920), assassinated Paul Kelly (1876–1936), natural causes Vito Cascio Ferro (1862–1943) Giosue Gallucci (1864–1915), assassinated Huang Jinrong (1868–1953), natural causes John Morrissey (1831-1878), natural causes Jefferson R. "Soapy" Smith (1860–1898), assassinated Al Swearengen (1845–1904), natural causes

Early 20th century (1900–1919) James "Big Jim" Colosimo (1878–1920), assassinated Salvatore "Toto" D'Aquila (1878–1928), assassinated Sebastiano DiGaetano (1862–?), disappeared in 1912 Vito Di Giorgio (1880–1922), assassinated Du Yuesheng (1888–1951), natural causes Ignazio "the Wolf" Lupo (1877–1947), natural causes Owney "The Killer" Madden (1891–1965), natural causes Giuseppe Morello, (1867–1930), assassinated Nicholas Morello (1890–1916), assassinated Salvatore Sabella (1891–1962), natural causes Nicolo Schiro (1872–1957), natural causes Ciro Terranova (1889–1938), natural causes Calogero Vizzini (1877–1954), natural causes Harukichi Yamaguchi (1881–1938), natural causes

Prohibition (1919–1933) Joe Adonis (1902–1971), natural causes Joe Aiello (1891–1930), assassinated Joseph Ardizzone (1884–1932), assassinated Joseph "Joe Bananas" Bonanno (1905–2002), natural causes Al "Scarface" Capone (1899–1947), natural causes Vincent "Mad Dog" Coll (1908–1932), assassinated Moe Dalitz (1899–1989), natural causes Rosario DeSimone (1873–1946), natural causes Jack "Legs" Diamond (1897–1931), assassinated Jack Dragna (1891–1956), natural causes Vincent "The Schemer" Drucci (1898–1927), assassinated Tommy Gagliano (1884–1951), natural causes Waxey Gordon (1886–1952), natural causes in prison Enoch L. Johnson (1883–1968), natural causes Meyer Lansky (1902–1983), natural causes John Lazia (1896–1934), assassinated Louis Lepke (1897–1944), executed Antonio "The Scourge" Lombardo (1892–1928), assassinated Charles "Lucky" Luciano (1897–1962), natural causes Stefano "The Undertaker" Magaddino (1891–1974), natural causes Vincent Mangano (1888–1951), assassinated Salvatore Maranzano (1886–1931), assassinated Giuseppe "Joe the Boss" Masseria (1887–1931), assassinated Gaspare Messina (1879–1957), natural causes George "Bugs" Moran (1891–1957), natural causes Alfred Mineo (1880–1930), assassinated Johnny Jack Nounes (1890–1970) Dean O'Banion (1892–1924), assassinated Raymond L.S. Patriarca (1908–1984), natural causes Joseph Pinzolo (1887–1930), assassinated Joe Profaci (1897–1962), natural causes Ollie Quinn (1893–1949) Gaetano Reina (1889–1930), assassinated George Remus (1874–1952), natural causes Paul "The Waiter" Ricca (1897–1972), natural causes Arnold Rothstein (1882–1928), assassinated Joseph "Polack Joe" Saltis (1894–1947), natural causes Dutch Schultz (1902–1935), assassinated Benjamin "Bugsy" Siegel (1906–1947), assassinated Stephanie "Queenie" St. Clair (1886–1969), natural causes Johnny Torrio (1882–1957), natural causes Dutch Voight (1888–1986), natural causes Earl "Hymie" Weiss (1898–1926), assassinated Frankie Yale (1893–1928), assassinated Frankie LaPorte (1901–1972) Noboru Yamaguchi (1902–1942), natural causes Abner "Longy" Zwillman (1899–1959), suicide

Great Depression and World War II (1933–1945) Joseph "Joe the Barber" Barbara (1905–1959), natural causes Charles Binaggio (1909–1950), assassinated Alex "Shondor" Birns (1907–1975), assassinated Charles "Charlie the Wop" Carrollo (1902–1979), natural causes Frank Costello (1891–1973), natural causes Antonio Cottone (1904–1956), assassinated Salvatore Giuliano (1922–1950), killed by law enforcement. Ellsworth "Bumpy" Johnson (1905–1968), natural causes Yoshio Kodama (1911–1984), natural causes Sam "The Velvet Glove" Maceo (1894-1951), natural causes Rosario "Papa Rose" Maceo (1887-1954), natural causes Willie Moretti (1894–1951), assassinated Alfred "Big Al" Polizzi (1900–1975), natural causes Ross Prio (1901–1972), natural causes Giuseppe Genco Russo (1893–1976), natural causes John T. Scalish (1912–1976), natural causes John Sciandra (1899–1940), natural causes Santo Trafficante Sr. (1886–1954), natural causes

Post-World War II (1945–1970) Tony "Big Tuna" Accardo (1906–1992), natural causes Felix "Milwaukee Phil" Alderisio (1912–1971), natural causes in prison Gus Alex (1916–1998), natural causes in prison Albert Anastasia (1902–1957), assassinated Gaetano Badalamenti (1923–2004), natural causes in prison "King" David Barksdale (1947–1974), natural causes Francesco Paolo Bontade (1914–1974), natural causes Angelo Bruno (1910–1980), assassinated Russell Bufalino (1903–1994), natural causes Giuseppe Calderone (1925–1978), assassinated Giuseppe Calò (born 1931), serving life sentence in prison Michele "The Cobra" Cavataio (1929–1969), assassinated Đại Cathay (1940-1967), cause of death disputed Jackie "The Lackey" Cerone (1914–1996), natural causes Chen "King Duck" Chi-li (1943–2007), natural causes Carl Civella (1910–1994), natural causes in prison Nicholas Civella (1912–1983), natural causes Joseph Civello (1902–1970), natural causes Mickey Cohen (1913–1976), natural causes Joe Colombo (1914–1978), natural causes Vincenzo Cotroni (1911–1984), natural causes Simone "Sam the Plumber" DeCavalcante (1912–1997), natural causes Frank DeSimone (1909–1967), natural causes Calcedonio Di Pisa (1931–1962), assassinated Gaspar DiGregorio (1905–1970), natural causes Thomas "Tommy Ryan" Eboli (1911–1972), assassinated Gaetano Fidanzati (1935–2013), natural causes in prison Jeff Fort (born 1947), serving life sentence in prison Marcel Francisci (1920–1982), assassinated "Crazy" Joe Gallo (1929–1972), assassinated Carlo Gambino (1902–1976), natural causes Sam "Momo" Giancana (1908–1975), assassinated Vito Genovese (1897–1969), natural causes in prison Antonio "Nenè" Geraci (1917–2007), natural causes Anthony "Fat Tony" Gizzo (1902–1953), natural causes Michele "The Pope" Greco (1924–2008), natural causes in prison Salvatore "The Engineer" Greco (born 1924), international fugitive since 1963. Salvatore "Little Bird" Greco (1923–1978), natural causes Danny Greene (1933–1977), assassinated Kakuji Inagawa (1914–2007), natural causes Dündar Kılıç (1935–1999), natural causes Ronnie and Reggie Kray (1933-1995 and 2000), natural causes Angelo La Barbera (1924–1975), assassinated Salvatore La Barbera (1922–1963), assassinated Luciano Leggio (1925–1993), natural causes in prison Nick Licata (1897–1974), natural causes Philip "Cockeyed Phil" Lombardo (1908–1987), natural causes Frank Lucas, retired from crime since 1991. Tommy Lucchese (1899–1967), natural causes Hisayuki Machii (1923–2002), natural causes Joseph Magliocco (1898–1963), natural causes Stefano Magaddino (1891–1974), natural causes Cesare Manzella (1897–1963), assassinated Carlos Marcello (1910–1993), natural causes Antonino Matranga (1905–1971), assassinated Eddie McGrath (born 1906, date of death unknown), cause of death unknown James "Buddy" McLean (1929–1965), assassinated Joe "Pegleg" Morgan (1929–1993), natural causes in prison Michele Navarra (1905–1958), assassinated John "Handsome Johnny" Roselli (1905–1976), assassinated Khun Sa (1933–2007), natural causes Antonio Salamone (1918–1998), natural causes Paul Sciacca (died 1970), natural causes Antonino Sorci (1904–1983), assassinated Mickey Spillane (1934–1977), assassinated Tokutaro Takayama (1928–2003), natural causes Masaru Takumi (1936–1997), assassinated Kazuo Taoka (1913–1981), natural causes Santo Trafficante, Jr. (1914–1987), natural causes Carmine "Mr. Gribbs" Tramunti (1910–1978), natural causes in prison Aslan "Grandpa Hassan" Usoyan (1937–2013), assassinated Howie Winter (1929–2020), retired as boss in 1978. Kenichi Yamamoto (1925–1982), natural causes

Late 20th century (1970–2000) Pablo Acosta Villarreal (1937–1987), killed by law enforcement Mariano Agate (1939–2013), natural causes Pietro "The Little Gentleman" Aglieri (born 1959), serving life sentence in prison Evsei Agron (died 1985), assassinated Rafael Aguilar Guajardo (1950–1993), assassinated Vincenzo Aiello (born 1953), serving life sentence in prison Joseph "Joey Doves" Aiuppa (1907–1997), natural causes Yaakov Alperon (1955–2008), assassinated Victor "Little Vic" Amuso (born 1934), serving life sentence in prison Braulio Arellano Domínguez (d. 2009), killed by law enforcement Francisco Javier Arellano Félix (born 1969), serving twenty-three-year prison sentence Leoluca Bagarella (born 1942), serving life sentence in prison Marat Balagula (born 1943), at large Leroy "Nicky" Barnes (1933–2012), disease Jose Miguel Battle, Sr. (1930–2007), natural causes in prison Donovan "Bulbie" Bennett (1964–2005), killed by law enforcement Vivian Blake (1956–2010), natural causes Griselda Blanco (1943–2012), assassinated Stefano Bontade (1939–1981), assassinated Maurice Boucher (1953–2022), natural causes in prison Dominic Brooklier (1914–1984), natural causes in prison Klaus Bruinsma (1953–1991), assassinated Angelo Bruno (1910–1980), assassinated Giovanni "The Pig" Brusca (born 1957), serving life sentence in prison James "Whitey" Bulger (1929–2018), murdered in prison Martin "The General" Cahill (1949–1994), assassinated Năm Cam (1947–2004), executed William "Willie the Rat" Cammisano (1914–1995), natural causes Sebastiano Cannizzaro (born 1954), serving life sentence in prison Salvatore Cappello (born 1959), serving life sentence in prison Osiel Cárdenas Guillén (born 1967), serving twenty-five-year sentence Samuel "Sam Wings" Carlisi (1914–1997), natural causes in prison Amado Carrillo Fuentes (1956–1997), natural causes Vicente Carrillo Fuentes (born 1962), imprisoned Alfonso Caruana (born 1946), serving twenty-two-year prison sentence Anthony "Gaspipe" Casso (born 1942), serving life sentence in prison Paul Castellano (1915–1985), assassinated Peter Chong (born 1943), at large Renato Cinquegranella (born 1949), international fugitive since 2018 Anthony "Tony Ripe" Civella (1930–1976), natural causes Christopher "Dudus" Coke (born 1969), serving twenty-three-year prison sentence Calogero Conti (1924–2020), natural causes Jimmy Coonan (born 1946), serving seventy-five-year prison sentence Anthony "Tony Ducks" Corallo (1913–2000), natural causes in prison John D'Amato (died 1992), assassinated William "Big Billy" D'Elia (born 1946), retired Boris Dekanidze (died 1995), executed. Giuseppe "The Tiger" Di Cristina (1923–1978), assassinated Thomas DiBella (1905-1988), natural causes John "No Nose" DiFronzo (1928–2018), natural causes Paolo Di Lauro (born 1953), imprisoned Dương Văn Khánh (1956-1998), executed Rayful Edmond (born 1964), currently enrolled in the Witness Protection Program Aldo Ercolano (born 1960), imprisoned Angelo Epaminonda (1945–2016), natural causes Pablo Escobar (1949–1993), killed by law enforcement. Natale "Joe Diamond" Evola (1907–1973), natural causes Giuseppe Falsone (born 1970), serving life sentence in prison Giuseppe Farinella (1925–2017), natural causes in prison Giuseppe Flachi (1951–2022), natural causes Miguel Ángel Félix Gallardo (born 1946), serving life sentence in prison Joseph Ferriola (1927–1989), natural causes Guy Fisher (born 1947), serving life sentence in prison Aladino "Jimmy the Weasel" Fratianno (1913–1993), natural causes Carmine "The Cigar" Galante (1910–1979), assassinated Eugenio Galea (born 1944), imprisoned Juan García Ábrego (born 1944), serving life sentence in prison Giuseppe Giacomo Gambino (1941–1996), suicide Raffaele Ganci (born 1932), serving life sentence in prison Mario Gigante (born 1923), at large Vincent "The Chin" Gigante (1928–2005), natural causes in prison "Factory" John Gilligan (born 1952), on trial