Theophylactus

The name Theophylact or Theophylactus (Latin: Theophylactus, Greek Theophylaktos, "guarded by God") may refer to:
* Pope Benedict VIII (died 1024), born Theophylactus
* Pope Benedict IX (born c. 1012; died between 1055 and 1085); born Theophylactus
* Patriarch Theophylactus of Constantinople (917-956), Patriarch of Constantinople
* Theophylact of Antioch, Orthodox Patriarch of Antioch (744-751)
* Theophylactus of Alexandria, coadjutor Greek Orthodox Patriarch of Alexandria, (c. 695 – c. 711)
* Theophylactus (Exarch) (died 710), Exarch of Ravenna
* Theophylaktos, Bishop of Nicomedea (died 845)
* Theophylact, Count of Tusculum
* Theophylact of Bulgaria (died c. 1107), Bulgarian Archbishopric of Ohrid and biblical commentator
* Theophylact Simocatta, Byzantine author and historian