| SD&D | Short Drive and Dinner 
| Others |
| SD/D | System Development and Demonstration life cycle phase
| Others |
| SDD | Deep Dive
| Others |
| SDD | Lubango, Angola
| Others |
| SDD | Safe Driver Discount
| Others |
| SDD | Safety and Defensive Driving
| Others |
| SDD | Same Day Delay
| Others |
| SDD | Same Day Delivery
| Others |
| SDD | Sample to Detector Distance
| Others |
| SDD | Satellite Demodulator and Decoder
| Others |
| SDD | School Development Days
| Others |
| SDD | Seconday Data Display
| Others |
| SDD | Secure Device Deployment
| Others |
| SDD | Secure Document Delivery
| Others |
| SDD | Selective Digestive Decontamination
| Others |
| SDD | Sensory discrimination disorder
| Others |
| SDD | SEPA Direct Debit
| Others |
| SDD | Service Definition Document
| Others |
| SDD | Service Discovery Database
| Others |
| SDD | Sexy Domesticated Dad
| Others |
| SDD | Shame Driven Denying
| Others |
| SDD | Shuttle Design Directive
| Others |
| SDD | Significant Developmental Delay
| Others |
| SDD | Significant Developmental Delays
| Others |
| SDD | Significantly Developmentally Delayed
| Others |
| SDD | Silicon Drift Detector
| Others |
| SDD | Silicon Drift Detectors
| Others |
| SDD | Simple Damned Device
| Others |
| SDD | Simplified Due Diligence
| Others |
| SDD | Single Dish Data
| Others |
| SDD | Slightly Drunk Driver
| Others |
| SDD | Small Detail Decoration
| Others |
| SDD | Smallest Detectable Difference
| Others |
| SDD | Smart Dedicated Design
| Others |
| SDD | Smart Diary Suite Data
| Others |
| SDD | Software Data Dictionary
| Others |
| SDD | Software Description Database
| Others |
| SDD | Software Description Document
| Others |
| SDD | Software Design Description
| Others |
| SDD | Software Design Document
| Others |
| SDD | Software Detailed Design
| Others |
| SDD | Software Development Domain
| Others |
| SDD | Solution Delivery Division
| Others |
| SDD | Solution Deployment Descriptor
| Others |
| SDD | Solution Design Document
| Software, Software Engineering |
| SDD | SOPAS Device Driver
| Others |
| SDD | Specially Designated Distributor
| Others |
| SDD | Specific developmental disorders
| Others |
| SDD | Spray Dried Dispersion
| Others |
| SDD | Staff Development Day
| Others |
| SDD | Standard Detail Drawings
| Others |
| SDD | Static and Dynamic Data
| Others |
| SDD | Statistics and Data Directorate
| Others |
| SDD | Statistics for Development Division
| Others |
| SDD | Stereo Digital Delay
| Others |
| SDD | Sterile Dry Dressing
| Others |
| SDD | Storage Device Division
| Others |
| SDD | Store Door Delivery
| Others |
| SDD | Stroke Dependent Damping
| Others |
| SDD | Structure Of Descriptive Data
| Others |
| SDD | Structured Descriptive Data
| Others |
| SDD | Subscriber Data Document
| Others |
| SDD | Subsystem Device Driver
| Others |
| SDD | Sudan Dinar
| Others |
| SDD | Sudanese Dinar
| Others |
| SDD | Super Density Disk
| Others |
| SDD | Super Double Decker
| Others |
| SDD | Super Duty Diesel
| Others |
| SDD | Surface Damage Detection
| Others |
| SDD | Symmetric Diagonally Dominant
| Others |
| SDD | Symptom Driven Diagnostic
| Others |
| SDD | System Description Document
| Others |
| SDD | System Design Description
| Others |
| SDD | System Design Document
| Others |
| SDD | System Developing Document
| Others |
| SDD | System Development and Demonstration
| Others |
| SDD | System Distribution Directory
| Others |
| SDD | Systems Development Division
| Others |