| CASM | Campaign Against Snack Machines 
| Others |
| CASM | Canadian Air and Space Museum
| Others |
| CASM | Capital Area Science and Mathematics
| Others |
| CASM | Carrier Assessment Selection And Management
| Others |
| CASM | Certified Agile Service Manager
| Others |
| CASM | Church at South Mountain
| Others |
| CASM | Clinical Audit Structured Method
| Others |
| CASM | Close-Air Support Missile
| Others |
| CASM | Clusters Approach To Statistical Mechanics
| Others |
| CASM | Coalition for American Solar Manufacturing
| Others |
| CASM | Cognitive Aspects Of Survey Methodology
| Others |
| CASM | Coherent Adaptive Subcarrier Modulation
| Others |
| CASM | College of Arts Sciences Microscopy
| Others |
| CASM | Combined Arms Simulation Model
| Others |
| CASM | Communications And System Management
| Others |
| CASM | Communications Assets Survey and Mapping
| Others |
| CASM | Competitive Analysis Screening Model
| Others |
| CASM | Complex Adaptive Systems Modeling
| Others |
| CASM | Comprehensive Aquatic Systems Model
| Others |
| CASM | Computer Aided Seals Manufacturing
| Others |
| CASM | Contingency Acquisition Support Model
| Others |
| CASM | Coordinated Address Space Management
| Others |
| CASM | Cost Per Available Seat Mile
| Others |
| CASM | Culinary Arts Service Management
| Others |
| CASM | Customer And Supplier Management
| Others |