Obzor is a small town and seaside resort on the Black Sea coast of Bulgaria. It is part of Nesebar municipality, Burgas Province. The Thracian and ancient Greek name of Obzor was Naulochos, a small port on the coast of Thrace, a colony of Mesembria. The ancient Romans named it Templum Iovis; Pliny called it Tetranaulochus. During the Ottoman rule of Bulgaria, it was known as Gözeken. The modern name was introduced in 1936; Obzor obtained town privileges on 9 September 1984.