Jean Ladrière (September 7, 1921 – November 26, 2007)^[1] was a Belgian logician and philosopher, born in Nivelles. He was professor at the University of Louvain (UCLouvain)^[2] from 1959 to 1986, where he was chair of the Higher Institute of Philosophy from 1977 to 1985.^[3]

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The overall project animating his work (650 scientific articles, partially assembled into a dozen volumes) was to develop, in his words, "a report that is not a simple confrontation, but a justified report to the both reflected and lived between the (Christian) faith and reason," especially scientific and philosophical reason.