The title archimandrite (Greek: ἀρχιμανδρίτης, romanized: archimandritēs), used in Eastern Christianity, originally referred to a superior abbot (hegumenos, Greek: ἡγούμενος, present participle of the verb meaning "to lead") whom a bishop appointed to supervise several "ordinary" abbots and monasteries, or as the abbot of some especially great and important monastery.

An archimandrite wearing his full habit, holding his pastoral staff, and minimally vested in an epitrachelion and epimanikia. His mitre stands on the table to his right.

In the Eastern Orthodox Church "archimandrite" can also, and in practice usually does, serve purely as a title of honour (with no connection to any actual monastery) bestowed on a hieromonk as a mark of respect or gratitude for service to the Church - analogously to the title of "archpriest" bestowed on a distinguished married priest.