Stockwell (1849–1870) was a British Thoroughbred racehorse and a Leading sire in Great Britain & Ireland seven times; he was second on the sires' list a further four times during a 14-year period.

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.