| Acronym | Definition |
|---|
| SDD | Sudan Dinar (Currency Unit, ISO) |
| SDD | System Development and Demonstration |
| SDD | Solution Deployment Descriptor |
| SDD | Solution Deployment Descriptor (OASIS) |
| SDD | Software Design Description |
| SDD | Silicon Drift Detector |
| SDD | System Design and Development |
| SDD | Software Design Document |
| SDD | Subsystem Device Driver (IBM-ESS) |
| SDD | Selective Decontamination of the Digestive Tract |
| SDD | System Design Document |
| SDD | Software Design and Development |
| SDD | Sustainable Design and Development |
| SDD | Scottish Development Department (for pollution) |
| SDD | System Design Description |
| SDD | Salle de Douches (French: shower room) |
| SDD | Segment Design Document |
| SDD | System Description Document |
| SDD | Supplier Diversity Development |
| SDD | Soft Decision Decoding |
| SDD | Subantimicrobial-Dose Doxycycline |
| SDD | Secure Document Delivery |
| SDD | Same Day Delay |
| SDD | System Development Division (IBM) |
| SDD | Secure Data Device |
| SDD | Standard Delivery Date |
| SDD | Snoop Doggy Dog |
| SDD | Solution Design Document |
| SDD | Software Development Document |
| SDD | Scheduled Delivery Date |
| SDD | Specific Developmental Disorder |
| SDD | Software Development Department |
| SDD | Song and Drama Division (India) |
| SDD | Symbolic Defined Device |
| SDD | Software Data Dictionary |
| SDD | Solar Diffuser Door |
| SDD | Second Digitized Division (US Army) |
| SDD | Soft Decision Demodulation |
| SDD | Services and Development Division |
| SDD | Security Design Description |
| SDD | Strictly Diagonal Dominance |
| SDD | System Definition Directive |
| SDD | Service Delivery Dashboard |
| SDD | Scuba Doo Divers |
| SDD | Stutter Dialing Device |
| SDD | Small Discrete Devices |
| SDD | Separate Differential Detection |
| SDD | Subject Drop Device |
| SDD | Software Dependability Demonstration |
| SDD | System Dependent Data |
| SDD | Solvent Decantation Department |
| SDD | Security Due Diligence |
| SDD | SEPA (Single Euro Payments Area) Direct Debit (regulatory system to harmonize direct debit payments across Europe) |