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Cognomen Kalyawat (Kalyawat ) , in the world, is an extremely rare surname. Much more prevalently, Kalyawat is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kalyawat | Thailand |
Siritip, Nilayon, Sudsaard, Ponganekkul, Rattanaphan, and Rungrattanakal