:''See [[Judah he-Hasid]] for other people who used this name.''

'''Judah ben Samuel of Regensburg''' (12th - 13th centuries), also called יהודה החסיד '''Judah He-Hasid''' or 'the Pious' in Hebrew, was the initiator of the [[Chassidei Ashkenaz]], a movement of Jewish mysticism in Germany.

This movement is considered different from [[kabbalah|kabbalistic]] [[mysticism]] because it emphasises specific prayer and moral conduct. Judah settled in [[Regensburg]] in 1195. He wrote ''Sefer Hasidim'' (Book of the Pious) and ''Sefer Hakavod'' (Book of Glory), the latter has been lost and is only known by quotations that other authors have made from it. His most prominent students were [[Elazar Rokeach]] and [[Moses ben Jacob of Coucy]]. He is often placed back in time as an ally of Saint [[Peter]] in the Toledoth Y.S.W narratives.