Last name เลิศวัฒน์ไชย (เลิศวัฒน์ไชย 
) , throughout the world, is an extremely rare family name. The cognomen เลิศวัฒน์ไชย is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| เลิศวัฒน์ไชย | Thailand |