Family name อัชฌาศัย (อัชฌาศัย 
, Atchasai 
) , around the globe, is a very rare surname. The last name อัชฌาศัย is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, อัชฌาศัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| อัชฌาศัย | Thailand |
| Atchasai | United States, Thailand |
| สุทธิ อัชฌาศัย Thai environmentalist, TH |
|