Cognomen Kutthalaeng (Kutthalaeng 
) , in the entire world, is a very rare family name. The last name Kutthalaeng is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kutthalaeng | Thailand |
Kaewta, Buaphan, Khaewta, Sitthichai, and Preeyanuch