Rabban Mar Hormizd (Classical Syriac: ܕܪܒܢ ܗܘܪܡܙܕ) was a monk who lived in the seventh century in modern northern Iraq. Rabban is the Syriac term for monk. "Rabban" is also the Aramaic word for "teacher". He founded the Rabban Hormizd Monastery in Alqosh, named after him, which has served in the past as the patriarchate of the Church of the East. In the Church of the East and its descendant branches, Rabban Hormizd is commemorated on the second Sunday after Easter.