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In the world, Calla (Cala , Calla ) is a common unisex first name. The first name Calla is habitual in India, where it is a rare unisex name, Hong Kong, where it is a rare female name, and the United States. Not in comparison with a country's population, it most frequently occurs in India, the United States, and Ethiopia. More prevalently, Calla is the last name as well as the forename.