North Light (1 March 2001 – 20 March 2024) was Thoroughbred racehorse, and sire, bred in Ireland but trained in the United Kingdom. He was best known as the winner of The Derby in 2004.

North Light was bred in Ireland by Lord Weinstock's Ballymacoll Stud. On Lord Weinstock's death in 2002, his thoroughbreds, including the yearling North Light, passed to the executors of his estate. In 2004 the ownership of North Light was officially transferred to the Ballymacoll Stud.

North Light's sire Danehill is one of the most successful stallions of the last twenty years, producing the winners of more than 1,000 races including 156 at Group One/Grade I level. Among his best offspring are Dylan Thomas, Rock of Gibraltar, Danehill Dancer, Fastnet Rock, George Washington and Duke of Marmalade. North Light's dam, Sought Out was a successful racemare who won the Group One Prix du Cadran and traces back to Country House the dam of Reform. Apart from North Light, she has produced the Jockey Club Cup winner Cover Up, and the Glorious Stakes winner Researched.

North Light was trained throughout his career by Michael Stoute at Newmarket, Suffolk and was ridden in all but one of his races by Kieren Fallon.

North Light began his career in August 2003, in a maiden race at Sandown in which he finished strongly, failing by a short head to catch Post And Rail. Despite the closeness of the finish, Fallon did not use the whip on North Light, clearly suggesting that he could be capable of better. The standard of the race was unusually high; the third-place finisher, Iffraaj, went on to win three Group races, while the fourth placed Maraahel won eight.

When North Light appeared in another maiden race at Goodwood a month later, he started at odds of 1/5, and went clear in the final furlong to win "readily" from the future Group race winner Take A Bow. Although North Light was entered in the Group One Racing Post Trophy he did not run again in 2003.

North Light's three-year-old season began with a significant step up in class as he was sent to York for the Group Two Dante Stakes, a recognised trial for the Derby. He was the fourth choice of the ten runners in the betting, starting at odds of 6/1. North Light was sent into the lead by Fallon half a mile from home, and he stayed on strongly up the straight to win by half a length from Rule of Law with the favourite Let The Lion Roar two and a half lengths further back in third. North Light was travelling so well that Fallon began to ease the colt down and stopped riding only to start again when he noticed Frankie Dettori closing fast on Rule of Law. Although he had won an important trial, Stoute was careful not to sound overconfident after the race, describing the performance as "solid" and calling North Light an "each-way" chance for the Derby.

Following the late withdrawal of the Aidan O'Brien-trained Yeats, North Light was made 7/2 joint-favourite for the Derby with the 2000 Guineas runner-up Snow Ridge. Like North Light, Snow Ridge had been bred by the Ballymacoll stud but had been sold to Godolphin at the end of his two-year-old season. In fact the two colts had been born in the same stall, just over a month apart.