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Family name Karena (Karena , Карена , カレナ) , globally, is quite a rare cognomen. The cognomen Karena is characteristic of New Zealand, where it is quite a common surname, Oman, where it is a rare surname, and Australia. Measured by absolute frequency, it is commonest in New Zealand, India, and Indonesia. More prevalently, Karena is the forename as well as the last name.