The Ecclesiastical History Society (EHS) is a British learned historical society founded in 1961 to foster interest in, and to advance the study of, all areas of the history of the Christian Church through twice yearly conferences and publications.

[1] Founders include C. W. Dugmore of King's College London, Dom David Knowles (the first President), and W. H. C. Frend.

Since then the EHS has held annual conferences based on themes suggested by successive Presidents.

Both historians of nonconformity (including Clyde Binfield, Geoffrey Nuttall, and W. R. Ward) and Catholic historians (including Eamon Duffy and Bill Sheils) have been Presidents of the EHS.

[4] Fellows of the Ecclesiastical History Society include: Rowan Williams, Isabel Rivers,[5] Janet Nelson, Owen Chadwick, Henry Chadwick, Diarmaid MacCulloch, Geoffrey Nuttall, Walter Ullmann, Alec Vidler, Eamon Duffy, William Frend, and Averil Cameron.