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Surname Subbu (Subbu , சுப்பு) , around the world, is quite a rare cognomen. The cognomen Subbu is characteristic of Western Asia, particularly Kuwait, where it is quite a common surname, United Arab Emirates, where it is quite a rare surname, and Oman. Measured by absolute frequency, this name is the most popular in India, Kuwait, and United Arab Emirates. Likewise, Subbu is the forename as well as the last name.