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Cognomen Lÿ (Lÿ
) , throughout the world, is quite a rare family name. The family name Lÿ is habitual in Algeria, where it is quite a rare surname, Libya, where it is a rare surname, and Myanmar. Measured by absolute frequency, it is commonest in Algeria, Myanmar, and Egypt. Likewise, Lÿ is the forename as well as the last name.