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Throughout the world, Rabu (Rabo , Rabu , Рабу ) is a common unisex first name. The first name Rabu is habitual in Sub-Saharan Africa, particularly Nigeria, where it is quite a rare mostly masculine, but seldom girly name, Ethiopia, where it is quite a rare principally masculine, but very infrequently female name, and Somalia, where it is quite a rare unisex name. Measured by absolute frequency, it is commonest in Nigeria, India, and Ethiopia. Also, Rabu is the last name as well as the forename.
Rabu is also a name for the fictitious and mythical characters: Rabo Karabekian , the fictional chacter in the novel Bluebeard.