Frank Yewell Whiteley Jr. (January 31, 1915 – May 2, 2008) was a Hall of Fame Thoroughbred racehorse trainer. Born and raised on a farm in Centreville, Maryland, Whiteley grew up around horses and from a very early age was intent on racing them. Developing his skills, by age twenty-one he had embarked on a professional training career in his home state. He retired forty-nine years later having trained some of the most famous American racehorses of the second half of the 20th century.