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Worldwide, Karthi (Karthi ) is quite a common predominantly masculine, but very infrequently feminine first name. The first name Karthi is characteristic of Western Asia, particularly Oman, where it is quite a rare principally masculine, but very seldom female name, United Arab Emirates, where it is quite a rare masculine name, and Kuwait, where it is quite a rare principally masculine, but very seldom girly name. Measured by absolute frequency, it most frequently occurs in India, United Arab Emirates, and Saudi Arabia. Much less frequently, Karthi is the last name as well as the forename.
Karthi is also a name for the fictitious and mythical characters: Karthi , the Name of protagonist in Tamil movie Veppam.