| CACTI | Center for Advocacy for Cancer of the Testes International 
| Others |
| CACTI | Cloud Aerosol and Complex Terrain Interactions
| Others |
| CACTI | Coded Aperture Compressive Temporal Imaging
| Others |
| CACTI | Community Architecture Committee for Trust and Identity
| Others |
| CACTI | Coronary Artery Calcification in Type I
| Others |