Wistar may refer to:
Caspar Wistar (1696–1752), Pennsylvania glassmaker and landowner. Caspar Wistar (1761–1818), physician and anatomist, grandson of the glassmaker. Isaac J. Wistar (1827-1905), Union general and penologist. Wistar Institute, a biomedical research center in Philadelphia, Pennsylvania, named after the physician. Wistar rat, a strain of albino laboratory rats developed at the institute. Mount Wistar, a mountain in Greenland
See also Wister (disambiguation)