Leonard Dinnerstein (May 5, 1934 – January 22, 2019) was an American historian.
He was born in the Bronx on May 5, 1934, to parents Abraham and Lillian, née Kubrick. Dinnerstein was of Jewish descent, with ancestors from Austria, Romania, and what became Belarus. He attended Theodore Roosevelt High School, and graduated from the City College of New York before pursuing further study in American history at Columbia University. After completing his doctorate, Dinnerstein taught at New York Institute of Technology and Fairleigh Dickinson University. He then joined the University of Arizona faculty as professor from 1970 to 2004. Dinnerstein died of complications from kidney failure in Tucson, Arizona on January 22, 2019, aged 84.
- Roberts, Sam (January 31, 2019). "Leonard Dinnerstein, 84, Dies; Scholar of Anti-Semitism in U.S." New York Times. Retrieved February 4, 2019.
- Langer, Emily (February 1, 2019). "Leonard Dinnerstein, distinguished historian of anti-Semitism in America, dies at 84". Washington Post. Retrieved February 4, 2019.
- Braun, Phyllis (February 1, 2019). "Leonard Dinnerstein, scholar of U.S. anti-Semitism and UA professor, dies at 84". Arizona Jewish Post. Retrieved February 4, 2019.