Last name Xayasak (Xayasak 
) , around the world, is an extremely rare cognomen. The surname Xayasak is habitual in Northern America, particularly the United States, where it is an extremely rare surname. Much more frequently, Xayasak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Xayasak | Laos, United States |