Adena Springs is a Thoroughbred horse breeding operation owned by Frank Stronach and his family. The main farm is located in Paris, Kentucky, with satellite locations in Florida and Ontario, Canada. Adena Springs has won the Eclipse Award for Outstanding Breeder eight times, one of which was Stronach winning the award in his own name. Adena Springs has won the Canadian Sovereign Award for Outstanding Breeder six times, plus four earlier wins under Stronach's own name.
Adena Springs has stood multiple stallions at its various farms since 1996. Their first important stallion was El Prado, who was the leading sire in North America for 2002, and an influential sire of sires, including Medaglia d'Oro and Kitten's Joy, himself the leading sire in 2012. They next expanded their program by adding half-brothers Awesome Again and Macho Uno. As of 2016, the operation stands 18 stallions. In 2013, Adena Springs stood three of the top 15 stallions in the Thoroughbred industry, with stud fees ranging from $3,500 to $75,000 for various stallions.
Adena Springs began as a nursery to produce horses for Stronach Stables. Famous homebreds include Breeders' Cup Classic winner Awesome Again and his best son, Horse of the Year Ghostzapper, both of whom stand at Adena. With the expansion of the farm, Adena is now a major seller of young thoroughbreds. Horses bred and sold by Adena include Game On Dude and Judy the Beauty.
The first Adena Springs location was a 640 acres (260 ha) farm near Versailles, Kentucky, purchased in 1989. The farm was named after the Adena, who were the earliest known inhabitants of the region. Adena Springs Kentucky expanded to its current 2,000 acres (810 ha) facility located in Bourbon County near Paris, Kentucky in 2005.
The Adena Springs South farm is located in Williston, Florida, which is north of Ocala and was established in 1996 when the initial 453 acres (183 ha) were purchased, with an additional 1,050 acres (420 ha) added in 1999. The Florida facility now has 3,800 acres (1,500 ha) and in addition to housing several stallions, it is where the young Thoroughbreds begin their race training.