Last name Promthongkaew (Promthongkaew 
) , across the world, is a very rare family name. The last name Promthongkaew is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, Promthongkaew is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Promthongkaew | Thailand |