Cognomen Thankappan (Thankappan 
) , in all the world, is a common family name. The family name Thankappan is characteristic of Western Asia, particularly United Arab Emirates, where it is quite a common surname, Oman, where it is quite a rare surname, and Bahrain. Measured by absolute frequency, it is the most numerous in India, United Arab Emirates, and Saudi Arabia. More frequently, Thankappan is the forename as well as the last name.
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| Thankappan | Qatar, United Arab Emirates, Saudi Arabia, Oman, India |
| v. j. thankappan Indian politician (1934-2019), IN (b. 1934) |
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| bhargavi thankappan Indian politician, IN (b. 1942) |
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| rema thankappan researcher ORCID ID = 0000-0003-0722-3357 |
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| ullas thankappan researcher |
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| medhavy thankappan researcher ORCID ID = 0000-0001-8695-681X |
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| hajeeth thankappan researcher (ORCID 0000-0002-9246-7737) |
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| v. k. thankappan |
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| k. thankappan |
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Ke, Thampi, Mohanan, Arul Kumar, Arul Lingam, Kesavan, Parayil, Dhinesh, Johnson, Sankaran, Pillai, Chettiar, Panikkar, Unnithan, Antalin Sahaya Selvin, Chattiyar, Chettiyar, Jayakumar, Narayanan, Ajithkumar, Velmurugan, Chettyar, Subhashkumar, Pilala, Kannan, Pi, Wai, Mani, Kani, Jein, Nair, Sunil, Asari, Kumar, Prasad, Kutty, Plala, Nadar, Nayar, Mundan, Suresh, Subash, Ashari, Achari, Achary, Pilla, and Radhakrishnan