Cognomen Jeyaretnam (Jeyaretnam 
) , around the globe, is a rare last name. The cognomen Jeyaretnam is characteristic of Singapore, where it is a rare surname, Malaysia, and Australia, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Malaysia, Saudi Arabia, and Singapore. Very seldom, Jeyaretnam is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Jeyaretnam | Saudi Arabia, Australia, Singapore, United States, Malaysia |
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j. b. jeyaretnam Singaporean politician, SG (b. 1926) |
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kenneth jeyaretnam Singaporean politician, SG (b. 1959) |
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philip jeyaretnam Singaporean lawyer, writer, academic, SG (b. 1964) |
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