Joseph the Confessor (d. Constantinople, 832) was a 9th-century Archbishop of Thessalonica and brother of Theodore Stoudites.
Together with his brother he spoke out against the illegal marriage of Emperor Constantine VI (the "Moechian Controversy"), for which, after the torment, he was imprisoned in a dungeon on a deserted island.
Under Emperor Leo V the Armenian, when the second period of the Byzantine Iconoclasm began, the bishop and his brother were again punished for venerating the holy icons.
Under Emperor Michael II, Joseph, along with other monks who had been persecuted for the veneration of icons, were liberated.
He composed the triodia and stichera of the Lenten Triodion, a canon for the Sunday of the Prodigal Son's Week and other hymns.