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Surname Oleza (Oleza ) , all over the world, is a rare last name. The cognomen Oleza is habitual in Spain, where it is a rare surname, Philippines, where it is a very rare surname, and Argentina, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in Philippines, Spain, and Mexico. Likewise, Oleza is the forename as well as the last name.