Javier Castellano (born October 23, 1977, in Maracaibo, Zulia State, Venezuela) is a jockey in American Thoroughbred horse racing. Castellano began his riding career in 1996 at Santa Rita and La Rinconada racecourses in Venezuela. In June 1997 he moved to the United States where he rode at race tracks in southern Florida until 2001 when he moved to race on the New York State racing circuit. He had his first major wins in 2004, on Frank Stronach's colt Ghostzapper and won several major races including the 2004 Breeders' Cup Classic, earning 2004 Eclipse Award for Horse of the Year and other honors. In 2006, Castellano rode Bernardini for Mohammed bin Rashid Al Maktoum's Darley Racing, winning the Preakness Stakes, the Travers Stakes, and the Jockey Club Gold Cup.