| ICASS | immersive Close Air Support Simulator 
| Others |
| ICASS | Integrated Care and Support Solihull
| Others |
| ICASS | Integrated Community Assessment and Support Service
| Others |
| ICASS | Integrated Computer Assisted Surveillance System
| Others |
| ICASS | Interchange Collision Avoidance Support System
| Others |
| ICASS | International Conference in Actuarial Science and Statistics
| Others |
| ICASS | International Conference on Applied Surface Science
| Others |
| ICASS | International Confidential Aviation Safety Systems
| Others |
| ICASS | International Congress of Arctic Social Sciences
| Others |
| ICASS | International Cooperative Administrative Support Services
| Others |