Surname Jayarajan (Jayarajan 
) , in the world, is quite a rare cognomen. The cognomen Jayarajan is characteristic of Western Asia, particularly United Arab Emirates, where it is quite a rare surname, Qatar, and Oman, where it is a rare surname. In absolute terms, this name is the most popular in India, United Arab Emirates, and Malaysia. More prevalently, Jayarajan is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Jayarajan | Saudi Arabia, Malaysia, India, United Arab Emirates, Oman |
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p. jayarajan Indian politician, IN (b. 1952) |
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m.v. jayarajan Indian politician, IN (b. 1965) |
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| ajitha jayarajan Indian politician, IN (b. 1965) |
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| aditi jayarajan Indian herpetologist, IN |
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| senthil n jayarajan researcher |
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| rajshree jayarajan researcher |
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| sajil kumar pazhuparambil jayarajan researcher |
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Si, Suganthi, Chelliah, Kaniyeri, Kambrath, Kaprangottil, Kodikannath, Tharayil, Thorayintavida, Othayoth, Durairaju, Jayaraman, Narayanan, Natarajan, Manivannan, Adhikarath, Kalarikkal, Mangalasseri, Balakrishnan, Kannankuzhiyil, Madathil, Ramakrishnan, Nambron, Thai Ullathil, Ak, Tr, Tti, Raju, Nair, Menon, Rajan, Jayan, Nanoo, Nayar, Samuel, Kotten, Pillai, Kadachi, Kollody, Kookkal, Kozhummal, Poosamy, Jayaraj, Nambiar, and Gopalakrishna