Mary Wahl (1916-2007) was an American mathematician.
Wahl was born in Ottumwa, Iowa. She studied at the University of Iowa and Columbia University. In 1943, she married Manhattan Project physicist John Wahl. At Los Alamos, she was mostly a stay-at-home mother to three small children. She helped organize a Los Alamos pre-school, and occasionally substituted at the Los Alamos high school. After the war, she went on to teach mathematics at Western Connecticut State University.
Mary Wahl died on November 9, 2007, in Ridgefield, Connecticut.