DDN
| Abbreviation | Meaning | Tamil Meaning | Category |
|---|---|---|---|
| DDN | U.S. Defense Data Network | - | Astronomy |
| DDN | Data Defense Network | - | Business and Finance |
| Abbreviation | Meaning | Tamil Meaning | Category |
|---|---|---|---|
| DDN | U.S. Defense Data Network | - | Astronomy |
| DDN | Data Defense Network | - | Business and Finance |