Cognomen Prasannan (Prasannan 
) , all around the world, is quite a common family name. The cognomen Prasannan is characteristic of Western Asia, particularly United Arab Emirates, where it is quite a rare surname, Qatar, and Oman. Not in comparison with a country's population, the name is most common in India, United Arab Emirates, and Saudi Arabia. More frequently, Prasannan is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Prasannan | United Arab Emirates, Oman, India, Malaysia, Saudi Arabia |
| r. prasannan Indian academic, IN (b. 1929) |
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| dilsha prasannan Indian actor, IN |
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| lakha prasannan researcher |
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| k. prasannan |
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