Abraham Flexner was an American educator, best known for his role in the 20th century reform of medical and higher education in the United States and Canada.

The Flexner Report is a book-length landmark report of medical education in the United States and Canada, written by Abraham Flexner and published in 1910 under the aegis of the Carnegie Foundation. Flexner not only described the state of medical education in North America, but he also gave detailed descriptions of the medical schools that were operating at the time. He provided both criticisms and recommendations for improvements of medical education in the United States.