| SSDA | Salsa Spark Dance Academy 
| Others |
| SSDA | Saskatchewan Stock Dog Association
| Others |
| SSDA | Sector Skills Development Agency
| Others |
| SSDA | Sector Skills Development Agency (Great Britain)
| Others |
| SSDA | Secure Software Design Architect
| Others |
| SSDA | Seismic Structural Design Associates
| Others |
| SSDA | Seminole Sports Dietetic Association
| Others |
| SSDA | Seminole Sports Dietetics Association
| Others |
| SSDA | Service Station Dealers of America
| Others |
| SSDA | Short Story Day Africa
| Others |
| SSDA | Sidemounter Scuba Diver Asia
| Others |
| SSDA | Single-Stage Distributed Amplifier
| Others |
| SSDA | Small School District Association
| Others |
| SSDA | Small School Districts Association
| Others |
| SSDA | Small School Districts' Association (Sacramento, CA)
| Others |
| SSDA | Social Science Data Analytics
| Others |
| SSDA | Social Science Data Archive
| Others |
| SSDA | Social Science Data Archives (Australian National University, now ASSDA)
| Others |
| SSDA | Social Security Disability Act
| Others |
| SSDA | Social Service Departments Activity
| Others |
| SSDA | Social Spatial and Dynamic Analysis
| Others |
| SSDA | Solar System Data Archive
| Others |
| SSDA | Solid State Drive Alliance
| Others |
| SSDA | Solid-State Driver Amplifier
| Others |
| SSDA | South Shore Dance Alliance
| Others |
| SSDA | South South Development Academy
| Others |
| SSDA | South Suburban Darts Association
| Others |
| SSDA | South Sudan Defence Army
| Others |
| SSDA | Southland Sled Dog Association
| Others |
| SSDA | Split Sole Dance Academy (India)
| Others |
| SSDA | Split Soul Dance Academy
| Others |
| SSDA | Stack Sequential Decoding Algorithm
| Others |
| SSDA | Stanislaus Sworn Deputies Association
| Others |
| SSDA | Stout Student Dietetic Association
| Others |
| SSDA | Strategic Studies and Defense Analysis
| Others |
| SSDA | Structural steel design awards
| Others |
| SSDA | Successive Similarity Detection Algorithm
| Others |
| SSDA | Swedish Securities Dealers Association
| Others |
| SSDA | Synchronous Serial Data Adapter
| Others |