John James Mooney better known as J. D. Mooney^[1] (died 1966) was an American jockey and trainer who won the 1924 Kentucky Derby on Black Gold and the 1929 King's Plate on Shorelint.^[2] Mooney's riding career lasted for 10 years. His record included 261 victories, 258 seconds, and 280 thirds. He was in the money 30 percent of the time. Mooney is a member of the Louisiana Sports Hall of Fame and the Fair Grounds Racing Hall of Fame.^[3] After his career as a jockey, Mooney became a trainer. He trained 1962 Canadian Horse of the Year Crafty Lace.^[4]

Mooney was a native of New Orleans.^[1] His father, John J. Mooney was a horse breeder and owner.^[5] His son John J. Mooney was a horse racing executive and a member of the Canadian Horse Racing Hall of Fame.^[2] Another son, Paul A. Mooney was the president of the Boston Bruins.^[1] His grandsons John Mooney, Daniel Mooney and Mike Mooney are also involved in thoroughbred racing.^[4][5]