Zabljak Crnojevića, commonly referred to as Zabljak, is an abandoned medieval fortified town (fortress) in Montenegro. The fortress is located on the confluence of the Moraca river in Lake Skadar.
The first known written testimony of the fortress originate from mid-14th century. The fortress served as the capital of Zeta under the Crnojevic dynasty from 1466 till 1478, being the seat of Stefan and Ivan Crnojevic. However, Ivan Crnojevic was forced to move the capital in 1478 when the Ottomans seized the town during the siege of Shkodra, holding it until the decision of the Berlin Congress in 1878 when it fell under Montenegrin administration once again after 400 years of Turkish rule. The town has tall walls with towers, as well as one gate. Within the walls can be found: Ivan Crnojević’s court, Church of Saint George (was turned into a mosque during Ottoman rule), housing and military facilities, a warehouse for clothes and a water tank, most of which are preserved.