John Lewis Gaddis

John Lewis Gaddis
Gaddis speaks to U.S. Naval War College (NWC) faculty during the Teaching Grand Strategy workshop at the NWC
Born	1941 (age 75–76) Cotulla, Texas
Residence	United States
Citizenship	United States
Nationality	American
Fields	Foreign relations of the United States
Institutions	Ohio University Yale University Naval War College University of Oxford Princeton University
Alma mater	University of Texas, Austin
Doctoral advisor	Robert A. Divine

John Lewis Gaddis (born 1941) is the Robert A. Lovett Professor of Military and Naval History at Yale University. He is best known for his work on the Cold War and grand strategy, and has been hailed as the "Dean of Cold War Historians" by The New York Times. Gaddis is also the official biographer of the seminal 20th-century American statesman George F. Kennan.George F. Kennan: An American Life (2011), his biography of Kennan, won the 2012 Pulitzer Prize for Biography or Autobiography.

Gaddis was born in Cotulla, Texas, in 1941. He attended the University of Texas at Austin, receiving his BA in 1963, MA in 1965, and PhD in 1968, the latter under the direction of Robert Divine. Gaddis then taught briefly at Indiana University Southeast, before joining Ohio University in 1969. At Ohio, he founded and directed the Contemporary History Institute, and was named a distinguished professor in 1983.

In the 1975–77 academic years, Gaddis was a Visiting Professor of Strategy at the Naval War College. In the 1992–93 academic year, he was the Harmsworth Visiting Professor of American History at Oxford. He has also held visiting positions at Princeton University and the University of Helsinki. He served as president of the Society for Historians of American Foreign Relations in 1992.