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Last name Kouba (Kouba , Куба , קובה ) , around the globe, is a common cognomen. The cognomen Kouba is habitual in the Democratic Republic of the Congo, where it is quite a common surname, Czechia, and Curacao (explore the name in all countries). Measured by absolute frequency, it is commonest in the Democratic Republic of the Congo, Algeria, and Czechia. Much less frequently, Kouba is the forename as well as the last name.