The Kotromanić dynasty was a medieval royal family that ruled over the region of Bosnia from the 14th to the 15th centuries. Founded by Ban Stephen Kotromanić, the dynasty played a significant role in the political landscape of the time, establishing Bosnia as an important state in the Balkans. Under the leadership of notable figures like Tvrtko I, the dynasty expanded its territory and influence, even claiming the title of King of Bosnia. The Kotromanić dynasty is remembered for its contributions to the cultural and political development of Bosnia, leaving a lasting legacy in the region.