Surname Chaitonthuek (Chaitonthuek 
) , worldwide, is a very rare family name. The cognomen Chaitonthuek is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Chaitonthuek | Thailand |
Banjerd, Nattaya, Pornthip, Phornthip, and Chonlathat