| Acronym | Definition |
|---|
| CLAS | Classified |
| CLAS | College of Liberal Arts and Sciences |
| CLAS | Classify |
| CLAS | Culturally and Linguistically Appropriate Services |
| CLAS | Center for Latin American Studies |
| CLAS | Clinical Ligand Assay Society |
| CLAS | Community Legal Assistance Society |
| CLAS | College of Letters, Arts, and Sciences (USC) |
| CLAS | Commonwealth Legal Advisory Service (UK) |
| CLAS | Council for Leaders in Alabama Schools |
| CLAS | Clustering and Availability Software (market) |
| CLAS | CEBAF Large Acceptance Spectrometer |
| CLAS | Comité Local d'Action Sociale (French: Local Social Action Committee) |
| CLAS | CESG Listed Adviser Scheme (UK) |
| CLAS | Commercial Landlords Accreditation Scheme (UK) |
| CLAS | Center for Limb Atmospheric Sounding |
| CLAS | Criminal Litigation Accreditation Scheme (UK) |
| CLAS | Conformal Load-Bearing Antenna Structure |
| CLAS | Cancer Linear Analog Scale (patient quality-of-life) |
| CLAS | Council of Language Arts Supervisors |
| CLAS | Centrale de Loisirs d'Activités et de Services (French: Central Leisure Activities and Services) |
| CLAS | Center Level Application Software |
| CLAS | Closed Loop Action System (Raytheon) |
| CLAS | CEBAF Large Solid Angle |
| CLAS | Color Linear Array Scanner |
| CLAS | Community Lending Analysis System |
| CLAS | Civil Legal Aid Scheme |
| CLAS | Carry-Lookahead and Summation (processor unit) |
