Sky Jack (foaled April 18, 1996, in California) is a retired American thoroughbred racehorse.
Bred and raced by Rene and Margie Lambert, he was sired by Jaklin Klugman and out of the mare Sky Captive, a daughter of the 1986 Breeders' Cup Classic winner Skywalker.
After a successful season in 2000, Sky Jack incurred a knee injury that required multiple surgeries.
In winning the 2003 Longacres Mile Handicap,[2] Sky Jack set the record for both the fastest time and widest margin of victory.
[3] Due to a recurring knee problem, Sky Jack was retired in November 2003 to his owners' farm near Temecula, California.