Family name Lertassavarat (Lertassavarat 
) , in the world, is a very rare last name. The family name Lertassavarat is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Lertassavarat | Thailand |
Pattra, Kaweechai, Thayanee, and Theerathorn