Invincible Spirit is an Irish-bred, British-trained Thoroughbred racehorse. As a two-year-old, he won two out of his four races, but as a three-year-old, he only raced twice and was unsuccessful on both occasions. In 2001, he achieved two victories, one of which was his first Group race win in the MacDonagh Boland Stakes. He won the Duke of York Stakes in 2002, and the Group 1 Haydock Sprint Cup at the end of that year. Following his retirement from racing, he has emerged as one of Ireland's prominent stallions, siring notable progeny such as Fleeting Spirit, Kingman, Charm Spirit, Lawman, Mayson and Moonlight Cloud. Invincible Spirit was trained by John Dunlop and owned by Prince A. A. Faisal.

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.