Burgazada, Burgazadası, or shortly Burgaz (Greek: Αντιγόνη, Antigoni) is the third largest of the Princes' Islands in the Sea of Marmara, near Istanbul.
It is officially a neighbourhood in the Adalar district of Istanbul, Turkey. Burgaz is a common setting and even a major theme for writer Sait Faik Abasıyanık, where he also resided. Today, his residence is kept as a museum. In 2003 Burgaz suffered a terrible forest fire, losing 4 square kilometres of its entire woodland.
The island consists of a single hill 2 kilometres across. Demetrius I of Macedon, one of the Diadochi (Successors) of Alexander the Great, built a fort (Greek:Pyrgos for fort/tower) here and named it after his father Antigonus I Monophthalmus. The island took this name, but is generally known by the Turks today as simply Burgaz.