| Acronym | Definition |
|---|
| CAHS | Calgary Alpha House Society (Canada) |
| CAHS | College of Agriculture and Human Sciences (Prairie View A&M University; Texas) |
| CAHS | Carman Ainsworth High School (Michigan) |
| CAHS | Conway Area Humane Society (New Hampshire) |
| CAHS | Communications Arts High School (Antonio) |
| CAHS | Canadian Aviation Historical Society |
| CAHS | Columbus Alternative High School (Columbus, OH) |
| CAHS | Center for Advanced Holocaust Studies (US Holocaust Memorial Museum, Washington, DC) |
| CAHS | Clarendon Ancient History Series (books) |
| CAHS | Cathedral High School |
| CAHS | Crispus Attucks High School (Indiana) |
| CAHS | Chesaning Area Historical Society (Michigan) |
| CAHS | Civilian Award for Humanitarian Service (federal civil service) |
| CAHS | Chateauroux American High School |