Family name ペンコ (Penco 
, ペンコ) , in all the world, is quite a rare last name. The surname ペンコ is characteristic of Trinidad and Tobago, where it is quite a rare surname, Italy, and Ireland, where it is a rare surname. Measured by absolute frequency, it is commonest in Italy, Brazil, and Argentina. Very seldom, ペンコ is the forename as well as the last name.