Family name Xayyaseng (Xayyaseng 
) , worldwide, is quite a rare last name. The surname Xayyaseng is habitual in South-eastern Asia, particularly Laos, where it is quite a common surname, and Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Xayyaseng | Laos, Thailand |
Eksoulinh, Phengkeo, Vatthana, Maniphone, and Soukthavinh