| 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) |