John Singleton, (1776 – 1802) was an English horse racing jockey of the late 18th and early 19th century.
His father John married the daughter of the groom at his master Lord Rockingham's stud.
Back in his family's native Yorkshire he also won the 1802 St. Leger on Orville for Lord Fitzwilliam, who had inherited the estates of his uncle, Lord Rockingham,[2] the man who had provided Singleton's father and great uncle with so many of their victories, and also employed his maternal grandfather as stud groom.
[1] Singleton died two months later at the age of 26, "highly respected, esteemed and lamented" by the Newmarket racing community.
[2] Great Britain This English horse racing biographical article is a stub.