John "Jack" Langdon Caskey (1908–1981) was an American archaeologist and classical scholar. He directed the American School of Classical Studies in Athens from 1949 to 1959, and head of the Classics department at the University of Cincinnati from 1959 to 1979. His career focused on excavations at the ancient settlements of Troy, Lerna, and Keos. Until his marriage ended he worked with Elizabeth Caskey who went to excavate on her own account after they parted.
He was awarded the Gold Medal for Distinguished Archaeological Achievement by the Archeological Institute of America in 1980.
- "Elizabeth Caskey". Breaking Ground: Women in Old World Archaeology. Brown University. Retrieved 17 April 2016.
- Associated Press (8 December 1981). "John Langdon Caskey, Professor of Archeology". The New York Times.
- Davis, Jack L. (1996). "Caskey, John Langdon". In de Grummond, Nancy Thomson. Encyclopedia of the History of Classical Archaeology. Routledge. p. 253. ISBN 978-1-134-26854-2.