Last name Kakau (Kakau 
, Какау 
) , around the world, is a rare surname. The last name Kakau is habitual in New Zealand, where it is a rare surname, Malaysia, and Portugal, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in India, Malaysia, and Nigeria. Likewise, Kakau is the forename as well as the last name.