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Cognomen Kooyingrat (Kooyingrat ) , in the world, is a very rare surname. The last name Kooyingrat is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kooyingrat | Thailand |
Meen, Jidapa, Loessak, Kunpaweerak, Panchonnawasoung, Theeranat, and Chuleeporn