| Acronym | Definition |
|---|
| SDN➣Sun Developer Network (Sun Microsystems) |
| SDN➣SAP Developer Network |
| SDN➣SOF (Special Operations Forces) Deployable Node |
| SDN➣Sociale Databank Nederland (Dutch) |
| SDN➣Société Des Nations |
| SDN➣Student Doctor Network |
| SDN➣Solution Dyed Nylon (fibers) |
| SDN➣Software Distribution Network |
| SDN➣Sedan |
| SDN➣Service Dialing Numbers |
| SDN➣Self Defending Network |
| SDN➣System Development Network |
| SDN➣Sun Developer Network |
| SDN➣Sandane, Norway (Airport Code) |
| SDN➣Software Defined Network |
| SDN➣Secure Data Network |
| SDN➣Specially Designated National |
| SDN➣Service Delivery Network |
| SDN➣Self-Defending Network |
| SDN➣Sundhedsdatanettet (Danish: Health Data Network) |
| SDN➣Switched Data Network |
| SDN➣Standard Document Number |
| SDN➣Shareware Distribution Network |
| SDN➣Structural DNA Nanotechnology |
| SDN➣Social Development Network (Ministry of Community Development, Youth and Sports; Singapore) |
| SDN➣Sudan Republic |
| SDN➣S4C Digital Networks (television) |
| SDN➣Switched Digital Network |
| SDN➣System Development Notification |
| SDN➣Schedule Deletion Notification |
| SDN➣Sprint Dial Network |
| SDN➣Spatial Data Network(ing) (geographic information systems and remote sensing) |
| SDN➣System Defined Network |
| SDN➣Station/Subscriber Directory Number |