Berengar of Tours (died 6 January 1088), in Latin Berengarius Turonensis, was an 11th-century French Christian theologian and archdeacon of Angers, a scholar whose leadership of the cathedral school at Chartres set an example of intellectual inquiry through the revived tools of dialectic that was soon followed at cathedral schools of Laon and Paris. He came into conflict with Church authorities over the doctrine of transubstantiation of the Eucharist, instead arguing for a more spiritual presence.