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Family name Layan (ليان , Layan , لايان) , all over the world, is a common cognomen. The cognomen Layan is habitual in Western Asia, particularly Iraq, where it is quite a rare surname, Syria, and Saudi Arabia. Not in comparison with a country's population, it is commonest in Philippines, Iraq, and Saudi Arabia. More prevalently, Layan is the forename as well as the last name.