Alain Decaux, French historian and author
Alain Decaux (23 July 1925 − 27 March 2016) was a French historian. He was elected to the Académie française on 15 February 1979.

In 2005, he was, with others authors as Frédéric Beigbeder, Mohamed Kacimi, Richard Millet and Jean-Pierre Thiollet, among the Beirut Book Fair's main guests in the Beirut International Exhibition & Leisure Center, commonly (BIEL).