'''Theodosius the Great''' may refer to either:
* '''[[Theodosius the Great (Emperoremperor)|Theodosius the Great]]''', Emperor of Rome (379-395) who convened the [[Second Ecumenical Council]] (feast day: [[January 17]])* '''[[Theodosius the Great (Cenobiarchcenobiarch)|Theodosius the Great]]''', Cenobiarch (5th-6th centuries) who founded cenobitic (communal) [[monasticism]] (feast day: [[January 11]])
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