Kish (kēsh) [key], island (9 mi/14.5 km long, 4 mi/6.4 km wide), Iran, in the Persian Gulf off central S Iran. Kish has been developed as a tourist resort; there also is fishing, a pearl trade, and agriculture. Kish was great trade center (11th–14th cent.) until rise of Hormoz island. A palace complex from the 11th–12th cent. is there.