| Abbreviation | Definition |
|---|---|
| COMPEN | COMPENsator |
| COMPL | COMPLeted |
| COMPOOL | COMmon data POOL |
| COMPR | COMPRess |
| COMPT | COMPartmenT |
| COMR&DSAT | COMmunication Research and Development SATellite |
| COMSTAC | COMmercial Space Transportation Advisory Committee |
| COMTEL | COMpton TELescope |
| CON | CONtact |
| CON | Controls Of Navigation |
| CONCAP | CONsortium for Materials Development in Space Complex Autonomous Payload |
| CONCN | CONCentratioN |
| COND | CONDenser |
| COND | CONDition |
| CONDR | CONDitioneR |
| CONF | CONFerence |
| CONFIG | CONFIGuration |
| CONS | CONSole |
| CONT | CONTainer |
| CONT | CONTingency |