Diplomatic History is a peer-reviewed academic journal covering the foreign relations history of the United States. It is the official journal of the Society for Historians of American Foreign Relations and is published by Oxford University Press. The journal was established in 1977, and publishes five issues a year.

The current editors-in-chief are Anne L. Foster, Indiana State University, and Petra Goedde, Temple University. Alan McPherson serves as the associate editor.

According to the Journal Citation Reports, the journal had a 2020 impact factor of 0.529.