Jacques Leclercq (1891 in Brussels – 1971 in Beaufays) was a Belgian Roman Catholic theologian and priest.
He received a degree in law from the Université libre de Bruxelles and one in philosophy from the University of Louvain (UCLouvain), and was ordained a priest in 1917.
He was a supporter of Vatican II at its inception but we have evidence from his writing that his values disagreed with the change.
[1] From 1945 on he was in favor of the creation of a regional Walloon Christian-inspired movement, Rénovation wallonne, and wrote in 1963 an appeal to Catholics to rally to the movement, titled Les catholiques et la question wallonne ("Catholics and the Walloon question").
[1] The building that houses the School of Political and Social Sciences (PSAD) at the University of Louvain (UCLouvain) in Louvain-la-Neuve is named for him.