Julien R. Leparoux is a Champion jockey currently racing in the United States.
Leparoux, grew up in a racing family, the son of a jockey turned assistant trainer. He worked at the Chantilly Racecourse as a stable hand and in January 2003 emigrated to California to work as an exercise rider for fellow Frenchman, trainer Patrick Biancone. He embarked on his professional riding career in the summer of 2005 at Saratoga Race Course where he earned his first win on August 18. He finished the 2006 Saratoga meet with 28 wins, the most in track history by an apprentice. In 2006 he was also the leading winning jockey during the Turfway Park winter/spring meet, Churchill Downs spring/summer meet, and Keeneland Race Course spring meet.
For 2006, Julien Leparoux got his big break by his wins of 403 races to lead all jockeys in the United States. His total wins and earnings of $12,491,316 for the year were the most by an apprentice jockey in racing history. He was voted the 2006 Eclipse Award for Outstanding Apprentice Jockey.
In 2007 Leparoux again won riding titles at Turfway's winter/spring meet, Keeneland's spring meet and Churchill Downs' spring/summer meet. His was the first apprentice to win a riding title at Keeneland.