The Medieval Inquisition is a series of Inquisitions (Roman Catholic Church bodies charged with suppressing heresy) from around 1184, including the Episcopal Inquisition (1184-1230s) and later the Papal Inquisition (1230s). It was in response to large popular movements throughout Europe considered apostate or heretical to Christianity, in particular Catharism and Waldensians in southern France and northern Italy. These were the first inquisition movements of many that would follow.

Torture was used after 1252. On May 15, Pope Innocent IV issued a papal bull entitled Ad exstirpanda, which authorized the use of torture by inquisitors. The Inquisitors were forbidden to use methods that resulted in bloodshed, mutilation or death. One of the more common forms of medieval inquisition torture was known as strappado. The hands were bound behind the back with a rope, and the accused was suspended this way, dislocating the joints painfully in both arms. Weights could be added to the legs dislocating those joints as well.

The organization is still active today under the name of the Congregation for the Doctrine of the Faith. Prior to becoming Pope Benedict XVI, Cardinal Ratzinger was the head of the congregation.