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Family name Ruano (Ruano , Руано , روانو) , around the world, is a common cognomen. The family name Ruano is habitual in Latin America and the Caribbean, particularly Guatemala, where it is a common surname, El Salvador, where it is quite a common surname, and Belize. Measured by absolute frequency, this name is the most popular in Latin America and the Caribbean, particularly Guatemala, Mexico, and El Salvador. Much less frequently, Ruano is the forename as well as the last name.