Stephen III
Stephen III may refer to:
- Pope Stephen II, aka Stephen III,, pope of the Roman Catholic Church
- Pope Stephen III, native of Sicily
- Stephen III of Iberia, Guaramid dynasty, presiding prince of Iberia from 779/780 to 788
- Stephen III of Naples, duke of Naples
- Stephen III of Hungary, King of Hungary and Croatia
- Stefan Dragutin of Serbia, Stephen III of Serbia
- Stephen III, Duke of Bavaria
- Stephen III Báthory, Hungarian nobleman and commander, Palatine of Hungary
- Stephen III of Moldavia, aka Stephen the Great, Prince of Moldavia