Vincent "Mad Dog" Coll (born Uinseann Ó Colla, July 20, 1908 – February 8, 1932) was an Irish-American mob hitman in the 1920s and early 1930s in New York City.

Coll gained notoriety for the alleged accidental killing of a young child during a mob kidnap attempt.

[1][2] Coll was born in Gweedore, an Irish-speaking district, in County Donegal in Ulster, the northern province in Ireland.

In the late 1920s, he started working as an armed guard for the illegal beer delivery trucks of Dutch Schultz's mob.

At age 19 Coll was charged with the murder of Anthony Borello, the owner of a speakeasy, and Mary Smith, a dance hall hostess.

One of the earliest victims was Peter Coll, Vincent's older brother, who was shot dead on May 30, 1931, while driving down a Harlem street.

In all, around 20 men were killed in the bloodletting; the exact figure is hard to pin down; New York was also in the midst of the vicious Castellammarese War at the same time.

[citation needed] On June 2, Coll and his gang broke into a garage owned by Schultz and destroyed 120 vending machines and 10 trucks.

One of Coll's best-known victims was gambler George "Big Frenchy" DeMange, a close associate of Owney Madden, boss of the Hell's Kitchen Irish Mob.

A large touring car pulled up to the curb, and several men pointed shotguns and submachine guns towards Rao and started shooting.

[5][7] After the Vengalli killing, New York City Mayor Jimmy Walker dubbed Coll a "mad dog".

[5] During a police lineup, a defiant Coll said that he had been in Albany, New York, for the past several months and refused to answer any other questions without an attorney present.

[13] In September 1931, between the killing of young Vengalli and his acquittal for that death, Coll was hired by Salvatore Maranzano, who had recently declared himself capo di tutti i capi, to murder Charles "Lucky" Luciano, the new acting boss of the Mafia family of the same name.

[14] On September 10, Maranzano summoned Luciano, Vito Genovese and Frank Costello to his office at the 230 Park Avenue in Manhattan.

On February 1, 1932, four or five gunmen invaded a Bronx apartment which Coll was rumored to frequent and opened fire with pistols and submachine guns.

Three people (Coll gangsters Patsy Del Greco and Fiorio Basile and bystander Emily Tanzillo) were killed.

[20] A week after the Bronx shootings, at 12:30 am on February 8, Coll was using a phone booth at a drug store at Eighth Avenue and 23rd Street in Manhattan.

The gunman told the cashier, "Keep cool, now", drew a Thompson submachine gun from under his overcoat and opened fire on Coll in the glass phone booth.

They were chased unsuccessfully up Eighth Avenue by a foot patrolman who had heard the gunshots and commandeered a passing taxi, but the car got away.

Dutch Schultz attorney Dixie Davis later claimed that gangster Bo Weinberg was the getaway driver of the limousine.