| CBD | Central Business District [engl.] Zentrum von Städten |
| t | troy frühere Gewichtseinheit |
| DC | District of Columbia |
| DA | District Attorney Bezirksanwalt |
| FSDO | Flight Standards District Office |
| GADO | General Aviation District Office |
| CEM | Central Alaska [Internationaler Airport-Code] |
| CM | Central Memory |
| CO | Central Office |
| CT | Central Time |
| CEH | Central European History Zeitschrift |
| CPE | Central Processing Element |
| CPG | Central Pattern Generator |
| CID | Central Institute for the Deaf |
| CPD | Central Pulse Distributor |
| CEL | Central European oil pipeline |
| COT | Central Office Terminal |
| COS | Central Office Switch |
| CLU | Central Logic Unit |
| CLT | Central Limit Theorem |
| CIO | Central Imagery Office |
| CNS | Central Nervous System |
| CIA | Central Intelligence Agency |
| CNT | Central Networking Testbed |
| CO | Central Office [engl.] Büro, aber auch technische Stelle |
| CET | Central European Time |
| CNA | Central News Agency |
| CPS | Central Point Software |
| CPU | Central Processing Unit |
| CS | Central Storage [engl.] Zentrale Speicherung |
| CAM | Central Address Memory |
| SCO | Serving Central Office |
| CBS | Central Bus Station [engl.] Zentraler Omnibusbahnhof [ZOB] |
| ECO | Electronic Central Office |
| ECB | European Central Bank Europäische Zentralbank, Frankfurt/ M., http://www.ecb.int/ecb/html/index.de.html |
| DCP | Duplex Central Processor |
| CCP | Central Communication Processor |
| CCT | Central Control Terminal |
| CSO | Central Services Organization |
| CSS | Central Security Service Abteilung des US-Amerikanischen Geheimdiensts NSA |
| CST | Central Standard Time |
| CdT | Central Daylight Time |
| CCU | Central Communcation Unit |
| CTC | Central Test Center |
| NCB | National Central Bank |
| SCOT | Stepper Central Office Tester |
| SCPD | Supplementary Central Pulse Distributor |
| ESCB | European System of Central Banks |
| COER | Central Office Equipment Report |
| CBS | Central Battery Signalling [engl.] |