There have been several people named '''Alexius'''

* [[Alexius I Comnenus]] (1048-1118), Byzantine emperor
* [[Alexius II Comnenus]] (1167-1183), Byzantine emperor
* [[Alexius III]], Byzantine emperor
* [[Alexius IV]], Byzantine emperor
* [[Alexius V]], Byzantine emperor
* [[Alexius I of Trebizond]], Emperor of Trebizond
* [[Alexius II of Trebizond]], Emperor of Trebizond
* [[Alexius III of Trebizond]], Emperor of Trebizond
* [[Alexius IV of Trebizond]], Emperor of Trebizond
* [[Alexius Mikhailovich]] (1629-1676), tsar of Russia
* [[Alexius Petrovich]] (1690-1718), Russian tsarevich
* [[Alexius, Metropolitan of Moscow]], (1354-1378)
* [[Patriarch Alexius II]] (1990-present), Patriarch of Moscow and all Russia
* [[Alexius (saint)|Saint Alexius]]
*Alexius, a monk and saint of Kiev - see [[Abraham and Onesimus of Kiev]]

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