John Augustine Zahm (1851 - 1921) was an American author and scientist. He was born at Lexington, Ohio and died in Munich, Germany.

Zahm was educated at the University of Notre Dame, Indiana, and upon graduation entered the Congregation of the Holy Cross, and was ordained priest in 1875. He filled various positions in the Congregation, at one time being provincial from 1898 to 1906. He was the author (sometimes under the pseudonym of Mozans), of a number of books covering a large variety of subjects; among these were: "Evolution and Dogma," "Scientific Theory and Catholic Doctrine," "Along the Andes and down the Amazon," "The Quest of El Dorado." He was an enthusiastic Dante student and assembled at Notre Dame one of the three largest of the Dante libraries in America. He was a scholarly and brilliant writer. He was a member of the Roosevelt Scientific Expedition to South America and on that and other trips collected maps, photographs, relics, curios, etc., which were added to the valuable collection of fifteen hundred volumes of South American history and research work at Notre Dame University. (1922 Supplement I)