Oscar Auerbach (January 1, 1905 – January 15, 1997) was an American pathologist and medical educator who significantly helped tie cigarette smoking to cancer.
Auerbach was born in Manhattan, New York City. He was the first child of European Jewish immigrants, Max and Jennie Auerbach. He attended Staten Island Academy but never completed high school or college. He entered New York University based on exams, then left without a degree to enter New York Medical College, receiving his MD in 1929. He later studied pathology in Vienna, where he met his wife.