Heberto Castillo Jr. (born July 21, 1969 in Panama City, Panama) is a retired jockey in American Thoroughbred horse racing. He was born into a family involved in the sport. His father was a jockey and his mother Gloria was a horse trainer in Florida.^[1] His sister, Rita, married jockey José Santos in 1997.^[2]

In 1986, Castillo rode in his first race at Fair Grounds Race Course in New Orleans, Louisiana and four years later won the riding title at Florida's Calder Race Course. Among his major career wins were two Donn Handicaps in 1993 and 1994,^[3][4] the 1998 Hialeah Turf Cup Handicap,^[5] and the 2000 Metropolitan Handicap.^[6]

Castillo retired in 2006.^{[citation needed]}