COS
| Abbreviation | Meaning | Tamil Meaning | Category |
|---|---|---|---|
| COS | Cosmic Origins Spectrograph | - | Computer Acronyms(common) |
| COS | Corona Oxide Semiconductor | - | Computer Acronyms(common) |
| COS | Carry-on Oxygen System | - | Organizations |
| COS | Console Operating System | - | Organizations |
| COS | Cosine | - | Organizations |
| COS | Change Of Subject | - | ISO Country Codes |
| COS | Cooper Ornithological Society | - | Astronomy |
| COS | Corsican Language (ISO 639-2 Code) - Cosine | - | Astronomy |
| COS | Class of Service | - | Human Genome |