Last name Pieros (Pieros 
) , throughout the world, is a rare surname. The last name Pieros is habitual in Cyprus, where it is quite a rare surname, Greece, where it is a rare surname, and Colombia, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in the United States, Greece, and Cyprus. Also, Pieros is the forename as well as the last name.