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Cognomen Arulrajan (Arulrajan
) , worldwide, is a very rare surname. The cognomen Arulrajan is habitual in Singapore, where it is a rare surname, the United Kingdom, where it is a very rare surname, and India, where it is an extremely rare surname. More prevalently, Arulrajan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Arulrajan | Singapore, Canada, India, France, United Kingdom |
Arul, Kolappan, Anandaraj, Rengaraju, Ganeshraja, and Velayutham