Cognomen Peku (Peku 
, Пеку 
) , around the world, is a rare surname. The family name Peku is habitual in Albania, where it is quite a rare surname, Ghana, where it is a rare surname, and Switzerland, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Ghana, Albania, and Japan. Likewise, Peku is the forename as well as the last name.