Family name Watcharasit (วัชรสิทธิ์ 
, Watcharasit 
) , in all the world, is a rare last name. The last name Watcharasit is characteristic of Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. More prevalently, Watcharasit is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| วัชรสิทธิ์ | Thailand |
| Watcharasit | Thailand, United States |