Robert Nelson "Bobby" Ussery (born 1935 in Vian, Oklahoma) is a retired American thoroughbred horse racing Hall of Fame jockey. His first race as a professional jockey came at Fair Grounds Race Course in New Orleans on November 22, 1951, where he rode Reticule to victory in the Thanksgiving Handicap. By the end of the decade, he had won the Travers, Whitney and Alabama Stakes.
Riding Windfields Farm's colt New Providence, in 1959 he won Canada's most prestigious race, the Queen's Plate. The horse went on to win the Canadian Triple Crown, although Avelino Gomez took the mount for the final two legs.
Ussery's best finish in the Belmont Stakes was in 1959 aboard the colt Bagdad. In 1960, he won the Hopeful Stakes aboard that year's Eclipse Award 2-year-old champion, Hail To Reason. That same year, he rode Bally Ache to victory in the Florida Derby and the Flamingo Stakes en route to a second-place finish in the Kentucky Derby and then a win in the Preakness Stakes.
In 1967, Ussery won the Kentucky Derby on Proud Clarion  and finished first in 1968 aboard Dancer's Image. However, phenylbutazone, a substance banned in Kentucky at that time but later sanctioned after it was proven not to affect a horse's performance, was found in Dancer's Image's post-race urine test. Dancer's Image was disqualified and listed as having finished last.
- "National Museum of Racing and Hall of Fame". Racingmuseum.org. 1951-11-22. Archived from the original on 2012-05-07. Retrieved 2012-05-23.
- "TIME magazine". Time.com. 1959-08-17. Retrieved 2012-05-23.
- "''Saskatoon Star-Phoenix'' (Saskatchewan) - July 6, 1959". News.google.com. 1959-07-06. Retrieved 2012-05-23.
- "''New York Times'' - August 28, 19600". Select.nytimes.com. 1960-08-28. Retrieved 2012-05-23.
- Whitney Tower. "Sports Illustrated - May 30, 1960" (in Chinese). Sportsillustrated.cnn.com. Retrieved 2012-05-23.
- "Spartanburg, South Carolina ''Herald-Journal'' - May 7, 1967". News.google.com. Retrieved 2012-05-23.
- Daley, Arthur (1968-05-05). "''New York Times'' - May 5, 1968". Select.nytimes.com. Retrieved 2012-05-23.
- "Remington Park press release - September 27, 2011". Remingtonpark.com. Retrieved 2012-05-23.[permanent dead link]