King of the Slavs
King of the Slavs was a title denoting some Slavic rulers, as well as Germanic rulers that conquered Slavs, in the Middle Ages in European sources, such as Papal correspondence.
Papal use is bolded.
;Slavic
- Samo, ruler of Samo's Empire and the "Slavs" ; in the Frankish Annals
- Drogoviz, ruler of the Veleti ; in Annales Mettenses priores in 805
- Trpimir I, ruler of Duchy of Croatia ; erroneously by Gottschalk in the 840s
- Svatopluk I of Moravia, ruler of Great Moravia ; by Pope Stephen V in 885
- Michael, ruler of Zachlumia ; erroneously in the Annales Barenses
- Mihailo Vojislavljević, ruler of Duklja ; by Pope Gregory VII in 1077
- Constantine Bodin, ruler of Duklja ; by the chronicle of Orderic Vitalis, relating to events of 1096
- Stefan Dragutin, ruler of Kingdom of Serbia and Syrmia ; by Pope Nicholas IV in 1288
- Canute Lavard, Danish prince ; by Abbott Wilhelm after 1129
- Canute VI, King of Denmark; by himself in 1185, after a conquest of Pomerania