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Family name Kaengkayan (Kaengkayan ) , all over the world, is a very rare cognomen. The family name Kaengkayan is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kaengkayan | Thailand |
Kannika, Panuwat, Tongtat, and Thongdaeng