| Acronym | Definition |
|---|
| SDA | Seventh-day Adventist (church) |
| SDA | Soap and Detergent Association |
| SDA | Stranka Demokratske Akcije (Bosnian: Party of Democratic Action; political party) |
| SDA | Sex Discrimination Act (UK - Law) |
| SDA | Survey Documentation and Analysis |
| SDA | Signore Degli Anelli |
| SDA | Strand Displacement Amplification |
| SDA | Seigneur des Anneaux (French: Lord of the Rings) |
| SDA | Schweizerische Depeschenagentur (Swiss National News Agency) |
| SDA | Service Delivery Area |
| SDA | Screen Design Aid |
| SDA | Sélection Directe à l'Arrivée (French; telecommunications) |
| SDA | Sumber Daya Alam (Indonesian: natural resources) |
| SDA | Surface Design Association |
| SDA | Shop, Distributive and Allied Employees Association (Australia) |
| SDA | Scuola Di Direzione Aziendale (Graduate Business School of Bocconi University, Milan, Italy) |
| SDA | Singapore Democratic Alliance |
| SDA | Specific Dynamic Action |
| SDA | State Drug Administration (China) |
| SDA | San Dieguito Academy (Encinitas, CA) |
| SDA | Service Delivery Agreement (UK) |
| SDA | Small Domestic Appliances |
| SDA | Spray Dryer Absorber |
| SDA | Society of Design Administration |
| SDA | Static Data Authentication |
| SDA | Source Data Automation |
| SDA | Sialodacryoadenitis |
| SDA | Student Dietetic Association |
| SDA | Self Decrypting Archive |
| SDA | Specially Denatured Alcohol |
| SDA | Samba de Amigo (game) |
| SDA | Spatial Data Analysis |
| SDA | Self-Directed IRA |
| SDA | Severe Disability Allowance (UK) |
| SDA | Stereo Dimensional Array (Polk Audio) |
| SDA | Special Duty Assignment |
| SDA | Scottish Development Agency |
| SDA | State Designated Agency (India) |
| SDA | Software Development Asset |
| SDA | Somali Democratic Alliance (political party) |
| SDA | System Display Architecture |
| SDA | Saint Dominic Academy (Jersey City, New Jersey) |
| SDA | Solvent Deasphalting (feedstock) |
| SDA | Software Disk Array |
| SDA | Stealth Digital Analyzer |
| SDA | Stade des Alpes (French sports stadium) |
| SDA | Stranka Demokratske Akcije Hrvatske (Party of Democratic Action of Croatia) |
| SDA | Standard Default Assumption |
| SDA | Single Direct Attack |
| SDA | Scalable Disk Array |
| SDA | System Design Analysis |
| SDA | Saboraud Dextrose Agar (fungal media) |
| SDA | Staff Duty Analysis (Civil Air Patrol) |
| SDA | Software Design Automation |
| SDA | Spectral Domain Analysis |
| SDA | System Design Alternative |
| SDA | Southern Domestic Airspace |
| SDA | Steepest Descent Algorithm |
| SDA | Security Domain Authority |
| SDA | Static Dissipater Additive (fuels) |
| SDA | Shaolin-Do Association |
| SDA | Shift & Disturbance Allowance (obsolete) |
| SDA | Society for Development Alternatives (India) |
| SDA | Scottish Dairy Association |
| SDA | Some Dumb Ass |
| SDA | Simple Direct Attack |
| SDA | Software Design Activity |
| SDA | Scottish Draughts Association |
| SDA | Senseless Desire to Acquire |
| SDA | Small Departments and Agencies |
| SDA | Siemens Domestic Appliances |
| SDA | Baghdad-Saddam International Airport |
| SDA | Soin des Arbres (French: Care of Trees) |
| SDA | Social Development Association |
| SDA | Specific Dynamic Activity |
| SDA | System Design Architecture |
| SDA | Shanghai Drug Administration |
| SDA | Subsea Distribution Assembly |
| SDA | Strategic Dialogues & Alliances |
| SDA | Short Dipole Antenna |
| SDA | Single Dermal Administration |
| SDA | Service Delivery Application (Sprint) |
| SDA | Strategic Defense Architecture |
| SDA | Signal Diagnostic Agent |
| SDA | Single Digit Adapter (telecommunications) |
| SDA | Serial Digital to Analogue |
| SDA | Solar Diffuser Assembly |
| SDA | Soledad Assassins (Unreal gaming clan) |
| SDA | Shaft Drive Axis (US NASA) |
| SDA | Signal Distribution Assembly |
| SDA | Ship's Destination Authority |
| SDA | Structural Damage Assessor (insurance) |
| SDA | Société des Agrégés (French: Society of Associates) |
| SDA | Standish Development Association (Standish, Michigan) |
| SDA | Spark Discharge in Air (excitation used in optical emission spectrometry) |
| SDA | Speed Disable Adjustment |
| SDA | Setoff Debt Act |
| SDA | Steam Driven Alternator |
| SDA | Stepper Dispatch Algorithm (scheduling rule) |
| SDA | Symbolic Device Address |
| SDA | Ship Design Agent |
| SDA | Sellerie Décoration Aménagement (French: Upholstery Decoration Design; aircraft upholstery) |
| SDA | Service Desk Assistant (UK police) |
| SDA | System Dependability Analysis |
| SDA | Baghdad, Iraq-Saddam International Airport (Airport Code) |
| SDA | Small Dead Animals (Canadian political blog) |
| SDA | Sensitive Discussion Area (information security; Canada) |
| SDA | Student Design Award (various locations) |
| SDA | Simulation of Diffusional Association |
| SDA | Sigma Delta Alpha (Latino fraternity) |
| SDA | Service Desk Analyst (computer technical support) |
| SDA | Serial Data Line |
| SDA | System Design Application (various organizations) |