| Acronym | Definition |
|---|
| ACHS | Asociación Chilena de Seguridad (Spanish; Santiago, Chile) |
| ACHS | Australian Council on Healthcare Standards |
| ACHS | American College of Healthcare Sciences (Portland, OR) |
| ACHS | Association of College Honor Societies |
| ACHS | Academy Charter High School (Lake Como, NJ) |
| ACHS | Australasian College of Health Sciences (Portland Oregon) |
| ACHS | Adolfo Camarillo High School (Camarillo, CA) |
| ACHS | Atlantic City High School |
| ACHS | Adams County Historical Society (Hastings, NE) |
| ACHS | Albemarle Charlottesville Historical Society (Charlottesville, VA) |
| ACHS | Alpha Chi Honor Society (est. 1922) |
| ACHS | Association of County Human Services (Washington) |
| ACHS | Amherst Central High School (Amherst, NY) |
| ACHS | Althoff Catholic High School (Belleville, IL) |
| ACHS | Arenac County Historical Society (Michigan) |
| ACHS | Adams Central High School (Monroe, IN) |
| ACHS | Atchison County Historical Society |
| ACHS | American Camp and Hospital Service |
| ACHS | Applied Community & Health Studies (Universities) |