| Abbreviation | Definition |
|---|---|
| COMMHDS | Communication High Definition Systems |
| Comp | Computer |
| COMPUTER | Commonly Oriented Machine Particullarly Used for Trade Education and Research |
| COMPUTER | Computing Oriented Manipulation Programming Used in Technoloy Education and Research |
| COMREG | Communication Region |
| CONS | Connection-Oriented Network Service |
| COOL | C Object Oriented Language |
| COOL | Chinese Object Oriented Language |
| COOL | Concurrency Out Of Limits |
| COQ | Cost Of Quality |
| COR | Common Object Runtime |
| CORK | Content Object Replication Kit |
| COS | Corporation for Open Systems |
| COSE | Common Open Software Environment |
| COSINE | Cooperation for OSI Networking in Europe |
| COSM | Composite Object Sound Modelling |
| COSS | Cross Operating System Service |
| COT | Computer Office Technology |
| COVE | Collaborative Ontology Visualization and Evolution |
| COW | Computer On Wheels |