Frank L. Brothers (born October 24, 1946, in New Orleans, Louisiana) is a former American Thoroughbred racehorse trainer from 1980 to 2009 with a career win percentage of just over 23%, winning 2,291 races, including 262 stakes winners of which 50 were graded stakes wins. Among those stakes winners was Hansel who in 1991 won two of the three U.S. Triple Crown races. He was voted the Outstanding Thoroughbred Trainer Award from the United Thoroughbred Trainers of America in 1991 and was inducted into the Fair Grounds Racing Hall of Fame that same year. In 2015 he was inducted into the Louisiana Sport's Hall of Fame.