title: Athanasius I
text: # Athanasius I
  
  Athanasius I may refer to:
  
  * Athanasius of Alexandria (c. 293 – 373), also called Pope Athanasius I of Alexandria, Christian theologian
  * Athanasius I Gammolo (died 631), Syriac Patriarch of Antioch
  * Athanasius I (bishop of Naples) (830–872)
  * Athanasius I of Constantinople (1230–1310), Ecumenical Patriarch of Constantinople
  