Stephen II was the Bosnian Ban from 1314, but in reality from 1322 to 1353 together with his brother, Vladislav Kotromanić in 1326–1353. He was the son of Bosnian Ban Stephen I Kotromanić and Elizabeth, sister of King Stefan Vladislav II. Throughout his reign in the fourteenth century, Stephen ruled the lands from Sava to the Adriatic and from Cetina to Drina. He was a member of the Kotromanić dynasty. He was buried in his Franciscan church in Mile, near Visoko, Bosnia.

Vladislav was the King of Syrmia from 1316 to 1325, and claimant to the Serbian Kingdom.