John Knight Giles (1895-1979) – Sentenced to prison for the attempted robbery of a train, Giles wound up in Alcatraz. In 1945, he came very close to escaping from the island.
Hugh Gant – Florida gangster.
Roy Gardner (1884-1940) – Stealing over a quarter of a million dollars in cash and securities, Gardner was the most famous escape artist and celebrated outlaw of his time.
Russell “Slim Gray” Gibson (??-1935) – A member of the Barker-Karpis Gang.
Fred “Shotgun” George Ziegler Goetz (1896-1934) – A Chicago mobster and a suspected participant in the Valentine’s Day Massacre in 1929.
“Hell’s Belle” Gunness – Black Widow of the Midwest – “Hell’s Belle” Gunness, one of America’s most degenerate female serial killers in history, likely killed both her husbands and all of her children.
Floyd Garland Hamilton (1908-1984) – An associate of Barrow Gang, Hamilton was not involved in the final shootouts that killed the infamous Bonnie and Clyde. Continuing a life of crime he maintained a lifestyle of robbery, was captured and sent to Alcatraz. In 1943, he tried to escape with three other men but was later apprehended. He was later sent to the prison in Leavenworth, Kansas and released in 1956.
Raymond Elzie Hamilton, aka: Floyd Beatty (1913-1935) – An associate of the Barrow Gang, Hamilton was one of the best-known desperadoes of the 1930s
Alva Dewey Hunt – Florida gangster.
Fred Hunter – A kidnapper and partner with Alvin Karpis after the fall of Barker-Karpis Gang, Hunter was sent to Alcatraz. He attempted to escape in 1943 with Floyd Hamilton, James Boarman and Harold Brest. Two of the men died during the escape attempt. Hunter was recaptured.
Charles E. Johnson – One of the FBI’s most wanted fugitive, Johnson committed burglaries and robberies between 1921 and 1953 and spent years in prison. He was convicted again in 1954.
William Daniel “W.D.” Jones (1918?-1974) – A childhood friend of Clyde Barrow, Jones joined the Barrow Gang in December 1932 at the age of 16. He was captured and sentenced to 15 years in prison.
Alvin Francis “Creepy Karpis” Karpowicz (1907-1979) – Born Alvin Karpowicz, he was nicknamed “Creepy” for his sinister smile. He was a member of the Barker-Karpis Gang, he was at one time, listed as “Public Enemy Number One.” He was eventually sent to Alcatraz and served the longest sentence ever at the notorious prison (25 years, 1 month.)
George”Machine Gun” Kelly – See George Kelly Barnes
Paul Kelly – See Paolo Antonio Vaccarelli
Harry Keywell – A member of the Purple Gang, Keywell was sentenced to life in prison in 1931 for murder.
Philip Keywell – A member of the Purple Gang, Keywell was sentenced to life in prison in 1930 for murder.
George Kimes – Oklahoma bank robber and brother of Matthew Kimes, the pair killed Sequoyah County, Arkansas Deputy Sheriff Perry Chuculate when he attempted to apprehend them. Later, the brothers were captured and George was sent to prison at McAlester, Oklahoma.
Matthew Kimes (??-1945) – Oklahoma bank robber, murderer, and brother of George Kimes, Matthew led the Kimes Gang in the 1920s.
Mary Kinder (??-1981) – The girlfriend of Harry Pierpont she was loosely involved with the Dillinger Gang but was never charged with any crime.
Arnold Kyle – The brother-in-law of Joseph Cretzer, both had long records and were sent to Alcatraz. The pair, along with Lloyd Barkdoll and Sam Shockley attempted to escape in May 1941. However, they didn’t make it and were placed in solitary confinement for indefinite periods.
La Cosa Nostra – American Mafia – The La Cosa Nostra, also known as the “Mob” or the “Mafia,” evolved from the Sicilian Mafia and is one of the foremost organized criminal threats to American society. Consisting of different “families”, this nationwide alliance of criminals is dedicated to pursuing crime and protecting its members.
Meyer Lansky (1902-1983) – A Jewish mafia figure, known as the “Mob’s Accountant”, was major organized crime figure who, along with his associate Charles “Lucky” Luciano, was instrumental in the development of the National Crime Syndicate in the United States.
Hermann K. “Baron” Lamm (1890-1930) – A former German army officer, Lamm immigrated to the United States and soon put his military training to use as a bank robber. Lamm successfully robbed banks across the United States until he was killed in a shoot-out near Sidell, Illinois.
Clarence Lieder (1906-1969) – A mechanic and armorer for Chicago’s underworld and Depression-era criminals, Lieder was the owner of the Oakley Auto Construction Company, competing against Joe Bergl, who also supplied mobsters and other criminals with customized automobiles throughout Prohibition. A friend to bank robber George “Baby Face” Nelson, Lieder also hid John Dillinger and Homer Van Meter in early 1934. Shortly after Dillinger’s death, Lieder closed his operations and left Chicago in July 1934, disappearing from public record thereafter.
Thomas Limmerick (??-1938) – A kidnapper, Limmerick was sent to Alcatraz and was killed during a during 1938 escape attempt
Wilhelm Loeser, aka: Ralph Robiend (1876-1935) – A surgeon who did a lot of work for gangsters, including removing their fingerprints with acid or a scalpel, he also altered Dillinger’s face, removing the distinctive cleft from his chin, some facial moles and generally giving the outlaw face-lift.
James C. “Tex” Lucas (1912-1963) – A bank robber and car thief, Lucus attempted to escape from Alcatraz.
Charles “Lucky” Luciano (1897-1962) – Born Salvatore Lucania, Lucky was an Italian-American mobster who is considered the father of modern organized crime in the United States. He was the first official boss of the modern Genovese crime family. He was, along with his associate Meyer Lansky, instrumental in the development of the National Crime Syndicate in the United States.