| Acronym | Definition |
|---|
| FCAS➣Familial Cold Autoinflammatory Syndrome |
| FCAS➣Fairfax County Animal Shelter (Fairfax, VA) |
| FCAS➣Fellow of the Casualty Actuarial Society |
| FCAS➣Franklin County Animal Shelter (Farmington, ME) |
| FCAS➣Frequency Control Ancillary Services (electric power industry) |
| FCAS➣Fatigue Critical Alteration Structure (aviation) |
| FCAS➣Franklin College of Arts and Sciences (University of Georgia) |
| FCAS➣Fellowship of Christian Athletes and Students |
| FCAS➣Foam Core Addicts Society |
| FCAS➣Fragile & Conflict-Affected State |
| FCAS➣Flight Control Augmentation System |
| FCAS➣Fullerton College Associated Students |