| Acronym | Sense | Language | Topics |
|---|---|---|---|
| CAS | Center for Asian Studies | In English | → Language, linguistics, literature → Geography, biography, history |
| CAS | Chemical Abstract Service (www.cas.org) | In English | → Chemistry → Chemical technology |
| CAS | Calibrated Airspeed | In English | |
| CAS | CITE Augmentation System | In English | |
| CAS | Command Augmentation System | In English | |
| CAS | Computer Airspeed | In English | |
| CAS | Configuration Accounting System | In English | → Accounting |
| CAS | Cooperative Application Satellite | In English | → Astronautics |
| CAS | Cost Accounting Standard | In English | → Accounting → Prices |
| CAS | Crew Accommodation System | In English | |
| CAS | Centre d'Analyse Stratégique | In French | → Public administration, government |
| CAS | Cambridge Astrophysics Series | In English | → Serial publications, periodicals → Astronomy → United Kingdom |
| CAS | Content Addressed Storage | In English | → Computer hardware → Knowledge management |
| CAS | Common Access System | In English | → Computer science |
| CAS | Caisse d'Activités Sociales | In French | → Social welfare |
| CAS | Comité d'Action Socialiste | In French | → Socialist parties → History |
| CAS | Conjonctivite Allergique Saisonnière | In French | → Pathology → Ophthalmology → Immunology and allergy |
| CAS | College of Arts and Sciences | In English | → Education → Applied sciences, technology → Arts |
| CAS | Computer Aided Selling | In English | → Software → Trade |
| CAS | Channel Associated Signaling | In English | → Telecommunications |