Last name Xaiyaseng (Xaiyaseng 
) , in the world, is a rare family name. The surname Xaiyaseng is characteristic of South-eastern Asia, particularly Laos, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Xaiyaseng | Laos |
Lar, Lhouy, and Phetsamone