Hippolyte Delehaye (Antwerp August 19, 1859 – Brussels April 1, 1941) was a Belgian Jesuit who was a hagiographic scholar and an outstanding member of the Bollandists, who established critical editions of texts relating to the Christian saints and martyrs that were based on applying the critical method of sound archaeological and documentary scholarship to the texts. This critical approach encountered difficulties, within the Jesuit Order, within the Holy Office and among "integralist" opponents of critical approaches. Other important works, with more restricted focus, are: