Last name โค้วไพโรจน์ (โค้วไพโรจน์, Khouwphiroj 
) , worldwide, is an extremely rare surname. The cognomen โค้วไพโรจน์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Khouwphiroj | Thailand |