Horse breeding Farm &|
Thoroughbred Racing Stable
|Industry||Thoroughbred Horse racing|
|Headquarters||Paris, Kentucky, United States|
Arthur B. Hancock|
(founding owner 1875-1957)
Arthur B. "Bull " Hancock, Jr. (owner 1957-1972)
Seth W. Hancock
(manager/owner since 1972)
|Eclipse Award for Outstanding Breeder (1984)|
Claiborne Farm, who celebrated one hundred years in business in 2010,  is located just outside Paris, Kentucky, USA, and is one of the most famous Thoroughbred horse farms in the United states. The farm was founded by Arthur B. Hancock, owner of Ellersbie Farm in Albemarle County Virginia and has been run by his family since its founding in c. 1911:
- Arthur B. Hancock (1875-1957)
- Arthur B. "Bull " Hancock, Jr. (1910-1972)
- Seth W. Hancock (b. 1949)
Arthur B. Hancock III (b. 1943) owns Stone Farm, a breeding operation near Paris, Kentucky.
Arthur B. Hancock imported breeding stock from Europe that made Claiborne Farm an international leader in breeding, sales, and racing. He bred Vigil, the 1923 Preakness Stakes winner. Among his famous sires was Sir Gallahad III purchased from France who was the leading sire in 1930, 1933, 1934, and 1940 and who sired 1930 U.S. Triple Crown winner Gallant Fox. Claiborne Farm was part of a 1936 consortium that imported Blenheim II from England and in 1944 purchased Princequillo who became the leading U.S. sire for 1957 and 1958.
Claiborne Farm has been visited twice by Queen Elizabeth II of the United Kingdom.
The farm was home to all the horses owned by the Phipps family.
Secretariat was syndicated by Seth Hancock for breeding purposes and stood at stud at Claiborne Farm at the conclusion of his racing career at the end of 1973 until his death in 1989.
Claiborne Farm won the Eclipse Award for Outstanding Breeder in 1979 and again in 1984.
Current Claiborne Farm Stallions include: Arch, During, Easing Along, Eddington, First Samurai, Flatter, Horse Chestnut (horse), Out of Place, Political Force, Pulpit, Seeking the Gold, Strong Hope, and War Front. Lure is a pensioner (i.e., a stallion retired from stud duty) at Claiborne.
Racing historian Edward L. Bowen feels that Claiborne Farm is possibly the most influential American breeding operation because of the substantial number of other breeders which benefited from Claiborne's horses and the length of time that influence has lasted. 
Some of the horses buried at Claiborne Farm:
- Ambiorix (1946-1975) - Leading sire 1961
- Blenheim II (1927-1958)
- Bold Ruler (1954-1971), Leading sire 1963, 1964, 1965, 1966, 1967. 1968, 1969, 1973
- Buckpasser (1963-1978)
- Double Jay (1944-1972)
- Gallant Fox (1927-1954)
- Gamely (1964-1975)
- Hoist The Flag (1968-1980)
- Johnstown (1936-1950)
- Mr. Prospector (1970-1999), Leading sire 1987, 1988
- Nasrullah (1940-1959), Leading sire 1955, 1956, 1959, 1960, 1962
- Nijinsky II (1967-1992)
- Princequillo (1940-1964), Leading sire 1957, 1958
- Riva Ridge (1969-1985)
- Round Table (1954-1987), Leading sire 1972
- Secretariat (1970-1989)
- Swale (1981-1984)
- War Cloud (1915-1923)
Some of the horses buried at Claiborne's Marchmont Farm division:
- Ack Ack (1966-1990)
- Chatterton (1919-1933), Leading sire 1932
- Conquistador Cielo (1979-2002)
- Damascus (1964-1995)
- Danzig (1977- 2006), Leading sire (1991, 1992, 1993)
- Easy Goer (1986-1994)
- Moccasin (1963-1986)
- Sir Gallahad III (1920-1949), Leading sire 1930, 1933, 1934, 1940
- Sir Ivor (1965-1995)
- Tom Rolfe (1962-1989)
- Unbridled (1987-2001)