
Francisco Alía Miranda is a Spanish historian. He has focused on the study of 20th century Spanish history. He has also published works dealing with the methodology of history.

Juan Avilés Farré is a Spanish historian and professor at the Spanish National University of Distance Education.

Ángel Bahamonde Magro is a Spanish historian. He is professor of Contemporary History at the Charles III University of Madrid (UC3M).

Richard Baxell is a British historian and the author of three books on the Spanish Civil War. Between 2015 and 2018 he was the Chair of the International Brigade Memorial Trust. He received his Doctor of Philosophy from the London School of Economics in 2002 with a thesis titled The British Battalion of the International Brigades in the Spanish Civil War, 1936–1939. As of 2020 he is a research fellow at the London School of Economics.
Sir Antony James Beevor, is a British military historian. He has published several popular historical works on the Second World War and other wars during the 20th century.

Burnett Bolloten was a writer and scholar of the Spanish Civil War.

Julián Casanova Ruiz is a Spanish historian. He teaches contemporary history at University of Zaragoza, and has been a visiting professor in US, UK and Latin America universities as well as a recurring visiting professor at Hungary's Central European University. He's a columnist for El País and frequent talk show guest at radio station Onda Cero.

Ricardo de la Cierva y Hoces was a Spanish historian and politician.

Sir Paul Preston CBE is an English historian and Hispanist, biographer of Franco, specialist in Spanish history, in particular the Spanish Civil War, which he has studied for more than 30 years. He is the winner of multiple awards for his books on the Spanish Civil War.
Rolf Sæther is a Norwegian shipping executive and writer.

Hugh Swynnerton Thomas, Baron Thomas of Swynnerton was an English historian and writer, best known for his book The Spanish Civil War.

Ángel Viñas Martín is a Spanish economist and historian. He has published many works dealing with the Spanish Civil War focusing on the war finance as well as the international relations aspects of the conflict.