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Family name Waja (Waja , วาจา ) , all over the world, is quite a rare cognomen. The family name Waja is habitual in Tunisia, where it is quite a rare surname, Ghana, and South Africa, where it is a rare surname. Not in comparison with a country's population, the name is most common in Indonesia, South Africa, and Tunisia. Likewise, Waja is the forename as well as the last name.