| CSA | Canadian Space Agency | - | Atmospheric Research Center |
| CSA | Camphorsulfonic Acid | - | Computer Acronyms(common) |
| CSA | Cambridge Scientific Abstracts | - | Computer Acronyms(common) |
| CSA | Canadian Standards Authority | - | Computer Acronyms(common) |
| CSA | Centrifugal Sudden Approxn. (in Scattering Calcns.) | - | Computer Acronyms(common) |
| CSA | Charge Sensitivity Analysis | - | Computer Acronyms(common) |
| CSA | Chemical-shift Anisotropy | - | Computer Acronyms(common) |
| CSA | Chiral Solvating Agent | - | Computer Acronyms(common) |
| CSA | Coupled States Approxn. | - | Computer Acronyms(common) |
| CSA | Coupled Static Approxn. (in Scattering Calcns.) | - | Computer Acronyms(common) |
| CSA | Coupled-subshell Approxn. (in Calcns. On Inner-shell Ionization Collisions) | - | Computer Acronyms(common) |
| CSA | CYclic Strain Attenuator | - | Organizations |
| CSA | Canadian Standards Association | - | Satellite Meterology |
| CSA | Cool Sweet Awesome | - | ISO Country Codes |
| CSA | Canadian Space Agency - Canadian Standards Association - Child Support Agency - Command Staff Advisor - Community-supported Agriculture - Confederate States Of America - Corps Storage Area -Czech Airlines | - | Astronomy |
| CSA | Communications Service Authorization
| - | Human Genome |
