Cognomen Leuanlatthavongsy (Leuanlatthavongsy 
) , in the world, is a rare family name. The last name Leuanlatthavongsy is habitual in South-eastern Asia, particularly Laos, where it is quite a rare surname, and Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Leuanlatthavongsy | Laos, Thailand |