| Abbreviation | Definition |
|---|---|
| SDRI | Sustainable Development Research Institute |
| SDRL | Supplier Data Requirements List |
| SDRL | Subcontract Data Requirements List |
| SDS | Sample Dump Standard |
| SDS | System Design Specification |
| SDS | Steering Damping System |
| SDS | Software Design Specification |
| SDS | Shuttle Dynamic Simulation |
| SDS | Sensor Display System |
| SDS | Social Development Staff |
| SDSD | Satellite Data Services Division |
| SDSL | Symmetric Digital Subscriber Line |
| SDSS | Space Division Shuttle Simulator |
| SDSS | Substance Dependence Severity Scale |
| SDT | Structural Dynamic Test |
| SDT | Shuttle Data Tape |
| SDT | Scaling and Display Task |
| SDTA | Structural Dynamic Test Article |
| SDTC | Sustainable Development Training Centre |
| SDTS | Spatial Data Transfer Standard |
| SDTV | Standard - Definition Television |
| SDU | Status Display Unit |
| SDU | Special Duty Unit |
| SDV | Static Driver Verifier |
| SDV | Space Delivery Vehicle |
| SDV | Shuttle Derived Vehicle |
| SDVF | Software Development and Verification Facilities |
| SDWA | Safe Drinking Water Act |
| SDX | Spatial Data Explorer |
| SE | South-East |
| SE | Software Engineering |
| SE | Shift Enhancing |
| SE | Substantially Equal |
| SE | System Engineer |
| SE | Self Employment |
| SE | Sports Entertainer |
| SE | Sales Expert |
| SE | Sales Engineer |
| SE | Supervisory Edition |
| SE | Superior Experience |
| SE | Systems Engineering |
| SE | Science and Engineering |
| SE&I | Systems Engineering and Integration |
| SE/FAC | Support Equipment/Facility |
| SEA | Special Education Assistant |
| SEA | Silicon Elastimeter Ablator |
| SEA | Sensor Electronics Assembly |
| SEA | Scanning Electrostatic Analysis |
| SEA-ME-WE2 | South East Asia-Middle East-Western Europe 2 |
| SEACF | Support Equipment Assembly and Checkout Facility |