Last name วัช (Watcha 
, วัช , Watchao ) , in the entire world, is a rare family name. The family name วัช is characteristic of Morocco, where it is a rare surname, Thailand, where it is a very rare surname, and France, where it is an extremely rare surname. In absolute terms, the name is most common in Morocco, Thailand, and the United States. Likewise, วัช is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Watcha | Morocco, Thailand, United States, India, Nigeria |
| Watchao, วัช | Thailand |