James "Wild Jimmy" Haggerty (died January 25, 1871) was an American criminal and well-known underworld mob figure in Philadelphia and later in New York City during the mid-to late 19th century.

Jimmy Haggerty was the leader of the Schuylkill Rangers, a predominantly Irish-American street gang, which terrorized the South Philadelphia waterfront, specifically its local wharves and coal yards, for over 25 years.

[1] The notorious Philadelphia gangs existed from 1836-1878[2] being sixty-five in all including the Schuylkill Rangers were the American Guards *(also in New York City); Bleeders; Blood Tubs *(also in Baltimore); Blossoms; Bouncers; Buffers; Bugs; Bulldogs; Centre Street Boys; Chesapeakes; Crockets; Darts; Deathfetchers; Dogs; Dog-Towners; Flayers; Fly-By-Nights; Garroters; Gumballs; Hyenas; Jack of Clubs; Jumpers; Juniatta Club; Kensington Blackhawks; Kerryonians *(also in New York City); Keystone No.

1; Rangers; Rats; Reading Hose Club; Rebels; Red Roses; Reed Birds; Shifflers; Skinners; Smashers; Snakers; Snappers; Spiggots; Spitfires; Sporters; Springers; Stingers; Stockholders; The Forty Thieves (also in New York City); The Vesper Social; Tormentors; Turks; Vampyres; Waynetowners; Weecys; Whelps; Wild Cats; Wreckers.

Although he was considered extremely violent when drunk, police officers testified to his reluctance to murder a victim in cold blood and described the frequent use of his pistol as a blackjack in confrontations, he was connected to a number of major robberies during his career.

He was pardoned by Governor Andrew G. Curtin eight months later, in part to Haggerty's political connections and his promise to leave the country upon his release, and lived in Canada for a brief time before returning to the city to resume his criminal career.

[9] His funeral was perhaps one of the biggest held in Philadelphia's history and took place at his mother's residence at the northeast corner of Twenty-Third and Filbert Streets, the longtime headquarters of Schuylkill Rangers, and was attended by what was thought to be one of the largest criminal gatherings of the era.

[10] An official inquest was held in the days following his death, attracting a number of prominent criminals such as Dan Noble, Joe King, Johnny Moore, Richard Barron and Broker Dick among others,[11] before it was finally concluded on February 1 with Reddy being released on a $10,000 bail.