Alan III de Rohan (c. 1135/40 – 1195), was the son of Alan II, Viscount of Rohan.
[1] He was the 3rd Viscount of Rohan and Lord of Corlay.
[2] He married Constance of Penthièvre, daughter of Alan of Penthièvre and Bertha, Duchess of Brittany.
[3] They had six children: Alan III and his wife Constance built the Abbaye Notre-Dame de Bon-Repos on 23 June 1184.
Constance died at an unknown date after 23 June 1184 and Alan married Françoise of Corbey.