Joseph Vincent Moriarty (1911 – February 26, 1979), also known as Newsboy Moriarty, was a Irish American mobster in Hudson County, New Jersey who controlled the numbers game.

He got started in the number racket when he was 13 years old, around 1923. In 1930 he was living with his widowed mother Ellen (1887-?) and his three siblings: Margaret Moriarty (1907–1982); a second sister; and Albert Moriarty (1918-c1960). Both his parents were from Massachusetts. He always wore the same set of inexpensive clothes. By the 1950s he lived with his two sisters in a small brownstone in the Horseshoe section of Jersey City that housed the poor Irish immigrants.

In the numbers game a player picks any three-digit number and bets anywhere from a few pennies to a few dollars. The bet is placed at a neighborhood candy store, newsstand, or tavern. Each day, the winning number is determined, and there may be none, one, or multiple winners. The number was usually the last three digits of the dollar figures of U.S. Treasury receipts, published in the next day's newspapers, or another tamper-proof number. A player's chance of winning with any given bet is one in 1,000 for a three digit number, 10 x 10 x 10.