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All around the world, كاسيو (Cassio , Casio , Cássio ) is a common masculine first name. The first name كاسيو is habitual in Brazil, where it is quite a common male name, Portugal, where it is a rare male name, and Albania. Measured by absolute frequency, it is the most numerous in Brazil, Italy, and Philippines. Very seldom, كاسيو is the last name as well as the forename.
كاسيو is also a name for the fictitious and mythical characters: Cassio Tagge , character in Star Wars: Episode IV – A New Hope and Cassio , the operatic character in the opera Otello by Giuseppe Verdi; Otello's captain.