Last name Деку (Deco 
, Deku 
, Decou 
) , in the world, is a common family name. The surname Деку is habitual in Ghana, where it is quite a common surname, Brunei, where it is quite a rare surname, and Mauritius. Not in comparison with a country's population, it most frequently occurs in Ghana, Indonesia, and Egypt. Likewise, Деку is the forename as well as the last name.