List of state leaders in 884
883 state leaders - Events of 884 - 885 state leaders - State leaders by year
Africa
Asia
Europe
- Bulgaria - Boris I, Knyaz of Bulgaria (852–889)
- Byzantine Empire - Basil I (867–886)
- Caucasus
- Littoral Croatia - Branimir, Duke of Littoral Croatia (878–892)
- England (Heptarchy) -
- East Francia - Charles the Fat, King of East Francia (882–887) and Holy Roman Emperor (881–888)
- West Francia -
- Carloman, King of West Francia (879–884)
- Charles the Fat, King of West Francia (884–888) and Holy Roman Emperor (881–888)
- Gascony - Sans III Mitarra, Duke of Gascony (864–893)
- Ireland - Flann Sinna, High King of Ireland (879–916)
- Italy - Charles the Fat, King of Italy (879–887) and Holy Roman Emperor (881–888)
- Kievan Rus' - Oleg of Novgorod, Prince of Kiev (882–912)
- Great Moravia - Svatopluk I, King of Great Moravia (870–894)
- Norway - Harald I Fairhair, King of Norway (872–930)
- Novgorod - Oleg, Prince of Novgorod (879–912)
- Kingdom of Provence - Boso (879–887)
- Scotland - Giric, King of the Picts (878–889), possibly together with Eochaid, King of the Picts (878–889)
- Serbia - Mutimir, Grand Zhupan of Serbia (850–891)
- Spain -
- Wales -
Middle East