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Family name أيلين (Aileen , Eylin , أيلين ) , all over the world, is quite a rare cognomen. The cognomen أيلين is characteristic of Latin America and the Caribbean, particularly Honduras, where it is quite a rare surname, Nicaragua, and Venezuela. Not in comparison with a country's population, it is commonest in Indonesia, Venezuela, and Honduras. Much more frequently, أيلين is the forename as well as the last name.