Jean Holzworth (March 26, 1915 – January 13, 2007) was an American veterinarian known for her work in feline medicine. She initially acquired a doctorate in Latin and taught at Mount Holyoke College, before retraining in veterinary medicine in the 1940s. Between 1950 and 1986 she practiced at the Angell Memorial Animal Hospital in Boston, specializing in the care of cats. She was among the first to document a number of disorders affecting the species, including feline infectious peritonitis and hyperthyroidism, and was editor of the well-regarded 1987 book Diseases of the Cat.