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Cognomen Khandaker (Khandaker , খন্দকার , Kandaker ) , in the world, is a common last name. The last name Khandaker is characteristic of Bangladesh, where it is quite a common surname, Qatar, where it is quite a rare surname, and United Arab Emirates. Measured by absolute frequency, this name is the most popular in Bangladesh, Saudi Arabia, and India. Likewise, Khandaker is the forename as well as the last name.