CO
| Abbreviation | Meaning | Tamil Meaning | Category |
|---|---|---|---|
| CO | Crystal Orbital | - | Computer Acronyms(common) |
| CO | Cardiac Output | - | Medical(slang) |
| CO | Carbon Monoxide | - | Organizations |
| CO | Cargo Operations (KSC Directorate) | - | Organizations |
| CO | Change Order | - | Organizations |
| CO | Contracting Officer | - | Organizations |
| CO | Cutoff | - | Organizations |
| CO | Cobalt | - | Astronomy |
| CO | Corsican Language (ISO 639-1 Code) | - | Astronomy |
| CO | Many | - | Astronomy |