Hormuz Island (also spelled Hormoz) is an Iranian island in the Persian Gulf. It is located in the Straits of Hormuz and is part of the Hormozg?n Province. It has an area of 42 km簡 (16 square miles).

Hormuz Island was once part of the Portuguese Empire. The island was conquered by the Portuguese explorer Afonso de Albuquerque in the Capture of Ormuz. There is a historic Portuguese fortress on Hormuz Island, the Fort of Our Lady of the Conception. The island was then captured by a combined Anglo-Persian force in 1622 in the Capture of Ormuz.