Charles John ffoulkes (1868–1947) was a British historian, and curator of the Royal Armouries at London. He was a younger son of the Reverend Edmund ffoulkes. He wrote extensively on medieval arms and armour.
ffoulkes was selected as the Curator of the Armouries by his predecessor, Harold Arthur Lee-Dillon, and assumed the office on 1 January 1913.
His wife Maude Mary Chester ffoulkes née Craven (1871-1949) was a ghostwriter.