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Surname Kallayapat (Kallayapat ) , all over the world, is an extremely rare last name. Much more frequently, Kallayapat is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kallayapat | Thailand |
Thongchai, Atsawaphidsawat, Tanasitritison, Tanasitritisorn, and Thanasitrittisorn