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Family name Thankachan (Thankachan ) , globally, is a common cognomen. The cognomen Thankachan is habitual in Western Asia, particularly United Arab Emirates, where it is quite a common surname, Qatar, where it is quite a rare surname, and Bahrain. Not in comparison with a country's population, it is commonest in India, United Arab Emirates, and Saudi Arabia. Also, Thankachan is the forename as well as the last name.