Surname Sengphachanh (Sengphachanh 
) , all over the world, is quite a common last name. The cognomen Sengphachanh is characteristic of Laos, where it is quite a common surname, the United States, where it is a very rare surname, and Thailand. Very seldom, Sengphachanh is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sengphachanh | Laos, United States, Thailand, Canada |