Denis from the kindred Péc (Hungarian: Péc nembeli Dénes; died between 1285 and 1288) was a Hungarian baron and soldier in the 13th century. Initially, he was a confidant of rex iunior Stephen, but later joined the partisans of the elderly Béla IV of Hungary. He actively participated in the military campaigns against Austria and Bohemia. He served as Palatine of Hungary and other high-ranking positions several times during the era of feudal anarchy.