| Abbreviation | Definition |
|---|---|
| CTE | Controlled Testing Environment |
| CTFL | Certified Tester Foundation Level |
| CTFP | Claro Tersus Focused Precision |
| CTI | Computer Telephony Interface |
| CTI | Cosin Tire Interface |
| CTM | Color Transform Matrix |
| CTM | Component Transaction Monitor |
| CTM | Corba Transaction Monitor |
| CTMS | Clinical Trial Management Software |
| CTOS | Convergent Technologies Operating System |
| CTP | Click Through Program |
| CTP | Crystalball Test Package |
| CTP | Customer Technology Preview |
| CTR | Certification Test Requirement |
| CTR | Certified Test Results |
| CTR | Coldboot Text Replacer |
| CTR | Color Transaction Register |
| CTRA | CT RaidAssist |
| CTRATA | CT RaidAssist Tank Assist |
| CTRL-C | Break command |