| Acronym | Definition |
|---|
| CSDN➣Cisco Self Defending Network |
| CSDN➣Circuit Switched Data Network |
| CSDN➣Circuit Switched Data Network (ITU) |
| CSDN➣Chinese Software Developer Net (China) |
| CSDN➣Computer Science Discipline Network (UK) |
| CSDN➣Colorado Swing Dance Network |
| CSDN➣Customs Secure Data Network |
| CSDN➣Colorado Springs Day Nursery (Colorado Springs, CO) |
| CSDN➣Commissin Scolaire des Navigateurs (French: School Board of Mariners) |