Al Khor Island (Arabic: جزيرة الخور‎), also known as Jazirat bin Ghanim and Purple Island, is an island located in the municipality of Al Khor on the northeast coast of Qatar. It accommodates the only archaeological site in the country attributable to the second millennium BC. There are four main periods of occupation on the island, dating from as early as c. 2000 BC to as late as 1900 AD. The island is best known for being the site of operation of a Kassite-controlled purple dye industry in the second millennium BC.