The Prince of Wales Stakes is a Canadian Thoroughbred horse race run annually at Fort Erie Race Track in Fort Erie, Ontario. Restricted to only three-year-old horses bred in Canada, it is contested on dirt over a distance of a mile and three sixteenths (9.5 furlongs). In 1959, the Prince of Wales Stakes became the second race in the Canadian Triple Crown series. It follows the June running of the Queen's Plate and precedes the Breeders' Stakes in August.