Enstone Spark (foaled 6 June 1975) was a British-bred Thoroughbred racehorse.
Trained by Barry Hills, at age two, Enstone Spark won the 1977 Lowther Stakes at York Racecourse.
[1] In 1978, her Canadian owner, Dick Bonnycastle, was planning to ship Enstone Spark to race in California but an outbreak of contagious equine metritis forced a change of plans and she remained to compete in England.
In 1978 Enstone Spark earned the most important win of her career at Newmarket Racecourse with a victory in the Classic 1,000 Guineas Stakes, ridden by Ernie Johnson.
Bred to stallions such as Affirmed, Roberto, and Bold Forbes, her offspring were not successful in racing.