Patriarch Sergius

Patriarch Sergius may refer to:

Eastern Orthodox patriarchs

 * Sergius of Bulgaria, Patriarch of Bulgaria c. 931 – c. 940
 * Patriarch Sergius I of Constantinople, Patriarch 610–638
 * Patriarch Sergius II of Constantinople, Patriarch 1001–1019
 * Patriarch Sergius I of Moscow, Patriarch 1943–1944

Other patriarchs

 * Sergius of Tella, Syriac Orthodox Patriarch of Antioch 544–546

Fictional patriarchs

 * Patriarch Sergius XVII, a character in Xenosaga