title: Patriarch Demetrius I
text: # Patriarch Demetrius I
  
  Patriarch Demetrius I or Patriarch Demetrios I may refer to:
  
  * Patriarch Demetrius I of Alexandria, ruled in 189–232
  * Demetrius of Bulgaria, Patriarch of Bulgaria in 927–c. 930
  * Demetrius I Qadi, Patriarch of the Melkite Greek Catholic Church in 1919–25
  * Patriarch Dimitrije, Serbian Patriarch in 1920–1930
  * Demetrios I of Constantinople, Ecumenical Patriarch in 1972–1991
  