John Daly (c. 1838 – April 26, 1906) was an American sportsman, professional gambler and underworld figure in New York during the late 19th century.
A protégé of John Morrissey, he was involved in illegal gambling on Broadway and in Midtown Manhattan for over thirty years.
He was also among the principal rivals of "Honest" John Kelly up until the turn of the 20th century and was considered one of the most successful and wealthiest gamblers in New York at the time of his death.
Daly had mixed success in this enterprise, having lost a lot of money on both betting on the races and in the stock market.
Daly was described as "a man of quiet, engaging manners" and regarded as a "generous employer", often continuing to pay his operators and allowing their families to live in his clubhouses even while his clubs were shut down by police raids.