Nasrullah (March 2, 1940 – May 26, 1959) was a Thoroughbred racehorse that was bred in Ireland and trained in the United Kingdom before becoming a champion sire in both Europe and North America.
Nasrullah was a big, handsome bay horse with a white star, bred in Ireland by his owner the Aga Khan.
Ridden by the champion jockey Gordon Richards, he won at odds of 7/4, beating the future Derby winner Straight Deal.
In the Free Handicap, a rating of the season's best two-year-olds, Nasrullah was given a weight of 136 lb, making him the top-rated colt, a pound behind the filly Lady Sybil.
In August, Nasrullah went some way towards restoring his reputation when he won the Cavenham Stakes, although Richards had to "persuade" the colt to keep going when he began to idle after taking the lead.
On his final appearance of the year, Nasrullah showed his best form as he won the 10-furlong Champion Stakes from Kingsway and Umiddad in what was described as "the smoothest race of his career".
Kerr kept him for three weeks before selling him for 19,000 guineas to Joseph McGrath, who subsequently stabled him at the Brownstown Stud in County Kildare.