Surname ไชยไข (ไชยไข 
) , throughout the world, is a very rare cognomen. The cognomen ไชยไข is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ไชยไข | Thailand |
สุวณี, ณัฎฐพล, มะลิจันทร์, and เจษฏากร