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In all the world, Callixtus (Calixto , Callixtus , Калист ) is a common male first name. The first name Callixtus is habitual in Latin America and the Caribbean, particularly Nicaragua, where it is quite a common masculine name, Peru, and Mexico, where it is quite a rare boy's name. Measured by absolute frequency, it is commonest in Mexico, Philippines, and Brazil. Also, Callixtus is the last name as well as the forename.