(born November 20, 1938) is an American pathologist.
He is a professor at the University of Arizona College of Medicine-Tucson.
Weinstein served for 32 years as an academic pathology department chair, in Chicago, Illinois and then Tucson, Arizona, while also serving as a serial entrepreneur engaged in university technology transfer.
He is past president of six medical organizations, including the United States and Canadian Academy of Pathology and the International Society for Urological Pathology, which he co-founded.
He is a cancer researcher, an educator, and an inventor.