Joseph Volotsky — also known as Joseph of Volotsk or Joseph of Volokolamsk (1439 or 1440 – September 9, 1515) — is a prominent theologian of the Russian Orthodox Church who leads the party defending monastic landownership.

He is a saint (as is his most prominent opponent, Nil Sorsky); his memory is celebrated on September 9 and October 18 (dates in the Julian Calendar).