USN
| Abbreviation | Meaning | Tamil Meaning | Category |
|---|---|---|---|
| USN | United States Navy | - | Atmospheric Research Center |
| USN | Ultrasonic Nebulizer | - | Computer Acronyms(common) |
| USN | United States Navy | - | Organizations |
| USN | United States Navy | - | Astronomy |
| USN | United States Navy | - | Business and Finance |