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Globally, Syna (Syna
, Сина
) is a rare principally feminine, but scarcely boy's forename. The first name Syna is characteristic of Bulgaria, where it is a rare feminine name, Kyrgyzstan, and Kazakhstan. Measured by absolute frequency, it is the most numerous in the United States, India, and Kazakhstan. Much less frequently, Syna is the last name as well as the forename.