| Acronym | Definition |
|---|
| SDX | Sigma Delta Chi (former name of the society of professional journalists; still used for the society's SDX Foundation) |
| SDX | Storage Data Acceleration |
| SDX | Super Deluxe |
| SDX | Sds Exchange Format |
| SDX | Sigma Delta Chi (journalism honor society) |
| SDX | Secure Document Exchange |
| SDX | Sedona, AZ, USA (Airport Code) |
| SDX | Simulation Data Exchange (file format for data exchange) |
| SDX | Storage Data Acceleration (Western Digital) |
| SDX | SmartDiscovery Extraction Server (Inxight Software Inc) |
| SDX | Starkit Developer Extension (computer programming) |