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Last name Olea (Olea , Oile , Олеа ) , in all the world, is a common surname. The last name Olea is characteristic of Latin America and the Caribbean, particularly Chile, where it is quite a common surname, Argentina, and Mexico. Measured by absolute frequency, it is commonest in Mexico, Argentina, and the Democratic Republic of the Congo. Much less frequently, Olea is the forename as well as the last name.