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Across the world, Deci (Deci , 德西 , ديسي ) is quite a rare unisex first name. The first name Deci is habitual in Indonesia, where it is a rare gender-neutral name, the Democratic Republic of the Congo, where it is a rare male name, and Sudan. In absolute terms, it is the most numerous in Indonesia, China, and Brazil. Also, Deci is the last name as well as the forename.