| Acronym | Definition |
|---|
| CASM | Certified Agile Service Manager (course) |
| CASM | Communications and System Management |
| CASM | Cost per Available Seat Mile |
| CASM | Coalition for American Solar Manufacturing (trade organization) |
| CASM | Center for Advanced Sustainable Management (Cologne Business School; Germany) |
| CASM | Communities and Small-scale Mining |
| CASM | Canadian Academy of Sports Medicine |
| CASM | Cognitive Aspects of Survey Methodology (behavioral science) |
| CASM | Contingency Acquisition Support Model (software) |
| CASM | Certificate of Advanced Study in Mathematics (Univeristy of Cambridge, UK) |
| CASM | Communications Asset Survey and Mapping |
| CASM | Coherent Adaptive Subcarrier Modulation |
| CASM | Canadian Association for Safe Motorcycling |
| CASM | Close Air Support Missile |
| CASM | Coordinated Abatement Strategy Model (Stockholm Environment Institute) |
| CASM | Combined Alarm-Status Monitor (electronic circuits) |
| CASM | Compounded Average over Starting Months |
| CASM | Combat Alignment System Manual |
| CASM | Central Aircraft Systems Management |
| CASM | Corps Artificer Sergeant Major (UK) |
| CASM | Court Appointed Special Monitor (foster children) |