Cognomen Яя (Yaya 
, Jaja 
, Iaia 
) , worldwide, is a widespread last name. The last name Яя is habitual in Cameroon, where it is a common surname, Nigeria, where it is quite a common surname, and Algeria (explore the name in all countries). In absolute terms, the name is most common in Nigeria, Cameroon, and India. Likewise, Яя is the forename as well as the last name.