Stephen II is the Bosnian Ban from 1314, but in reality from 1322 to 1353 together with his brother, Vladislav in 1326–1353.

He is the son of Bosnian Ban Stephen I Kotroman and Elizabeth, sister of King Stephen Vladislav II of Syrmia.

Throughout his reign in the fourteenth century, Stephen rules the lands from Sava to the Adriatic and from Cetina to Drina.

He is a member of the Kotromanić dynasty.

He is buried in his Franciscan church in Mile, near Visoko, Bosnia.