YCAS
| Acronym | Definition |
|---|---|
| YCAS | Yamaha Commercial Audio Systems, Inc. |
| YCAS | York County Astronomical Society (Pennsylvania) |
| YCAS | Yolo County Animal Services (shelter; Woodland, CA) |
| YCAS | Yemen Center for Arab Studies |
| YCAS | York Center for Applied Sustainability (Toronto, Ontario, Canada) |
| YCAS | York Community Accounting Scheme (UK) |