The Smederevo Fortress (Serbian: Cмeдepeвcκa твpђaвa, Smederevska tvrđava) is a medieval fortified city in Smederevo, Serbia, which was temporary capital of Serbia in the Middle Ages. It was built between 1427 and 1430 on the order of Despot Đurađ Branković, the ruler of the Serbian Despotate.