Alan IV de Rohan, called the Young (c. 1166 – 1205), was the eldest son of Alan III, Viscount of Rohan and Constance of Penthièvre.

[1] He was 4th Viscount of Rohan and Lord of Corlay.

[2] He took part to the Third Crusade.

Alan married Mabilla of Fougères,[1] a daughter of Raoul II, Baron of Fougères, Grand Seneschal of Brittany, Crusader, and Joan of Dol.

She died before 1198.