MacKenzie T. "Mack" Miller (born October 16, 1921 in Versailles, Kentucky) is a retired American Hall of Fame Thoroughbred racehorse trainer and owner/breeder. Known as the "gentleman trainer," during a forty-six year career, he conditioned seventy-two stakes winners, including four Champions in the United States plus as an owner, won races in France.
Miller grew up in Versailles, Kentucky, about twelve miles from the Keeneland Race Course in Lexington, Kentucky where as a teen he attended its first race meet in 1936. After dropping out of college and time in the United States Air Force, in 1947 he went to work as a stable hand for Calumet Farm. He became involved with the race conditioning of horses and in 1949 took out his own training license. In 1950 he won his first race then went on to a career which saw him condition seventy-two stakes race winners, including four Champions.
MacKenzie Miller was also a breeder of Thoroughbreds and was the co-breeder of De La Rose, the 1981 American Champion Female Turf Horse as well as Chilukki, the 1999 American Champion Two-Year-Old Filly.
During his career, Mack Miller earned a reputation as someone who was very patient with difficult horses which led to him training the 1974 Epsom Derby winner Snow Knight who had been purchased by renowned Canadian horseman, E. P. Taylor and brought to race in North America. Miller developed the ill-tempered horse into 1975's American Champion Male Turf Horse. Among other major clients, Miller trained for Charles W. Engelhard, Jr. then was hired by Paul Mellon to take over training duties for his Rokeby Stables. With the widely respected Mellon, he had an eighteen year association that brought them both their first Kentucky Derby win in 1993 with the colt, Sea Hero. Among their numerous other success, in the fall of 1980, in the pre-Breeders' Cup era, Winter's Tale won three top races for older horses, taking the Brooklyn and Suburban Handicaps plus the Marlboro Cup Invitational Handicap. And, in 1984, Miller conditioned Mellon's colt Fit to Fight to victory in the New York Handicap Triple, a feat accomplished just three times in the near one hundred years that the three races existed simultaneously. No horse has won the Handicap Triple in since.
MacKenzie Miller was inducted in the United States' National Museum of Racing and Hall of Fame in 1987. There is a Mack Miller Exhibit at the Aiken Thoroughbred Racing Hall of Fame and Museum in Aiken, South Carolina where he operated a winter training facility for many years before selling to Janice and Robert McNair, the then owners of Stonerside Stable. Other honors he has received include the 1993 Honor Guest at the Thoroughbred Club of America's Testimonial Dinner, the Mr. Fitz Award from the National Turf Writers Association for typifying the spirit of racing. Following his retirement from racing in 1995, he was elected a member of The Jockey Club in 1997.
Champions Trained by Mack Miller:
- Leallah - U.S. Champion 2-year old Filly (1956)
- Hawaii - U.S. Champion Turf Horse (1969)
- Snow Knight - U.S. Champion Turf Horse (1975)
- Fisher, Jonelle. MacKenzie Miller: The Gentleman from Morgan Street (2006) St. Crispian Press ASIN B000OBE14G