Surname Dedou (Dedou 
) , in all the world, is a rare last name. The cognomen Dedou is habitual in Cameroon, where it is quite a rare surname, Ivory Coast, where it is a rare surname, and Tunisia. Measured by absolute frequency, the name is most common in Cameroon, Ivory Coast, and Algeria. Much less frequently, Dedou is the forename as well as the last name.