Stephen du Perche (died 14/17 April 1205) was a French nobleman and crusader. He was a partisan of the Plantagenets in their conflict with the French crown and held fiefs from them. A younger son, he governed the County of Perche on behalf of his father and brother during their absence on crusade. He himself joined the Fourth Crusade in 1202 and travelled to the Holy Land. Afterwards, he went to the Latin Empire and was appointed duke of Philadelphia in Asia Minor in 1204. He died in battle against the Bulgars.