Muncimir (Latin: Muncimiro), sometimes called Mutimir, was a duke (Croatian: knez) of the Duchy of Croatia and reigned from 892 to around 910.
Muncimir took control of Croatia and ruled it independently of both Pope and Byzantium as divino munere Croatorum dux ("with God's help, Duke of the Croats").
In his charter, in which he reinforces his father's decisions about church lands, for the first time we can see the organization of the duke's court.
[2] They invaded northern Italy and also defeated Duke Braslav from the Duchy of Pannonia, endangering Croatia.
During Muncimir's reign, the exiled Prince Petar Gojniković of the Serbian House of Vlastimirović that stayed in Croatia returned to Rascia and seized power there.