Family name อาจสิทธิ์ (อาจสิทธิ์ 
) , in the entire world, is a very rare surname. The family name อาจสิทธิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, อาจสิทธิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| อาจสิทธิ์ | Thailand |