Surname Даду (Dadu 
, Dadou 
, Даду 
) , globally, is a common last name. The cognomen Даду is characteristic of Tunisia, where it is a common surname, Algeria, where it is quite a common surname, and Romania, where it is quite a rare surname. In absolute terms, the name is most common in Tunisia, Algeria, and India. More prevalently, Даду is the forename as well as the last name.