Louis Aleman was a French Roman Catholic cardinal and a professed member of the now-suppressed Canons Regular of Saint John Baptist. He served as the Archbishop of Arles from 1423 until his resignation in 1440 when he had resigned from the cardinalate. But he was later reinstated as a cardinal on 19 December 1449 at which point he served as the Protopriest and also reclaimed his titular church.