Barone Fortress, Stone fortification on Vidakuša hill in Šibenik, Croatia.

Barone Fortress is a stone fortification located on Vidakuša hill above Šibenik, overlooking the Adriatic Sea and surrounding islands. The structure features a compact layout with ramparts and bastions positioned to defend against naval attacks.

Barone Fortress was built in 1646, together with St. John's Fortress, in just 58 days after Šibenik's citizens began construction on 1 August without Venice's financial support. It withstood an Ottoman siege in October 1646 and a larger assault in August 1647. In 1659 Antonio Bernardo strengthened it, and in 1912 the city bought and renamed it Šubićevac.

The name Barone recalls Baron Christoph Martin von Degenfeld, the German general in Venetian service who led Šibenik's defence in 1646–1647; in 1912 the city bought the fort and renamed the district Šubićevac after the medieval Šubić noble family. Since reopening in 2016, an augmented-reality tour and multimedia displays recount the 17th-century fighting with the Ottoman Empire, and the grounds include a children's playground and a food-and-culture centre.

The fortress sits on Vidakuša hill, a few hundred metres southeast of St. John's Fortress and above the old town core. It is smaller than St. John's Fortress but easier for visitors to reach. From the upper level you look over the old town, the St. Ante channel and the islands of the Šibenik archipelago.

Barone Fortress and the adjacent St. John's Fortress were begun on 1 August 1646 and finished in 58 days, built by the citizens of Šibenik themselves after the Venetian Senate refused funding but did not forbid the work. The first Ottoman siege that October was repelled in seven days.