| Acronym | Definition |
|---|
| SDSN➣Sustainable Development Solutions Network (United Nations) |
| SDSN➣Secure Data System Network |
| SDSN➣Swimmer Detection Sonar Network (joint project) |
| SDSN➣Sixth Day and Seventh Night |
| SDSN➣Start Doing Something Now |
| SDSN➣Seaman, Steward Striker (Naval Rating) |
| SDSN➣Standard Data System Network |