Sorcerer (1796–1821) was a British Thoroughbred racehorse. He ran mainly at Newmarket and won fifteen of his twenty-one races, including the October Oatlands Stakes in 1800. After retiring from racing he became a successful stallion and was the leading sire in Great Britain and Ireland for three years. Amongst his progeny were Morel, Maid of Orleans, Wizard, Soothsayer, Sorcery, Trophonius, Comus and Smolensko. He was bred and owned by Sir Charles Bunbury and died in 1821.

The title of champion, or leading, sire of racehorses in Great Britain and Ireland is awarded to the stallion whose offspring have won the most prize money in Britain and Ireland during the flat racing season. The current (2022) champion is Dubawi, who earned his first title after finishing runner-up multiple times.