| CCA | Canonical Correspondence Analysis | - | Computer Acronyms(common) |
| CCA | Channel Coupling Array (quantum Theory For Atoms And Mols.) | - | Computer Acronyms(common) |
| CCA | Close-coupling Approximation | - | Computer Acronyms(common) |
| CCA | Convex Constraint Analysis | - | Computer Acronyms(common) |
| CCA | Copper Chromium Arsenic | - | Computer Acronyms(common) |
| CCA | Coupled-cluster Approach | - | Computer Acronyms(common) |
| CCA | Crystalline Cluster Approach (in Electronic Structure Calcns.) | - | Computer Acronyms(common) |
| CCA | Crystalline Colloidal Array | - | Computer Acronyms(common) |
| CCA | Communications Carrier Assembly | - | Organizations |
| CCA | Communications Carrier Assembly | - | Organizations |
| CCA | Contract Change Authorization | - | Organizations |
| CCA | Contract Change Authorization | - | Organizations |
| CCA | Coolant Control Assembly | - | Organizations |
| CCA | Counter Command Activity | - | Astronomy |
