Florence Nagle (26 October 1894 – 30 October 1988) was a British trainer and breeder of racehorses, a breeder of pedigree dogs, and an active feminist. Nagle purchased her first Irish Wolfhound in 1913, and went on to own or breed twenty-one United Kingdom Champions. Best in Show at Crufts in 1960 was awarded to Sulhamstead Merman, who was bred, owned and exhibited by Nagle. She also competed successfully in field trials with Irish Setters, from the 1920s until the mid-1960s resulting in eighteen Field Trial Champions. The male dog who was a linchpin in the 1970s revival of the Irish Red and White Setter breed was descended from one of Nagle's Irish Setters.