| Acronym | Definition |
|---|
| SDI➣Strategic Defense Initiative (US DoD) |
| SDI➣Serial Digital Interface |
| SDI➣State Disability Insurance |
| SDI➣Spatial Data Infrastructure |
| SDI➣Strength Deployment Inventory (Relationship Awareness Theory) |
| SDI➣Spiritual Directors International |
| SDI➣Single Document Interface (Microsoft) |
| SDI➣Silt Density Index |
| SDI➣Strategic Diagnostics Inc. (Newark, DE) |
| SDI➣Steel Door Institute (Cleveland, Ohio) |
| SDI➣Spatial Data Information |
| SDI➣Scottish Development International (Glasgow, Scotland) |
| SDI➣Stand Density Index |
| SDI➣Scuba Diving International |
| SDI➣Specially Designed Instruction (education) |
| SDI➣Selective Dissemination of Information |
| SDI➣Serial Data Interface |
| SDI➣Services Device Interface |
| SDI➣Saab Direct Ignition |
| SDI➣Storage Device Interconnect |
| SDI➣Sequential Data Set Input |
| SDI➣Single Drawing Interface |
| SDI➣Single Document Interface |
| SDI➣Software Distribution Network Information |
| SDI➣Socialisti Democratici Italiani (Italian Social Democrats) |
| SDI➣Socialisti Democratici Italiani (Italian Democratic Socialist party) |
| SDI➣Sustainable Development Indicators |
| SDI➣Steel Deck Institute |
| SDI➣Securities Disclosure of Interests (ordinance; Hong Kong) |
| SDI➣System Deployment Image (Windows file extension) |
| SDI➣Strategic Directions International (various locations) |
| SDI➣Standard Deviation Index (data analysis) |
| SDI➣Spatial Development Initiative (South African private sector development & jobs programs) |
| SDI➣Southern Dental Industries |
| SDI➣Storage Device Interface |
| SDI➣Spiral Dynamics Integral |
| SDI➣Service Delivery Infrastructure (various companies) |
| SDI➣Senior Drill Instructor |
| SDI➣Sonic Drive In (restaurant) |
| SDI➣Shack/Slum Dwellers International |
| SDI➣Sustainable Development, Inc. (Oregon) |
| SDI➣Standard Digital Imaging (Omaha, NE) |
| SDI➣Serial Data In |
| SDI➣Strategic Distribution, Inc. |
| SDI➣Systems Design Inc (Sparks, NV) |
| SDI➣Sarawak Development Institute |
| SDI➣Supplier Diversity Initiative |
| SDI➣Soldados do Inferno (Portuguese: Soldiers from Hell) |
| SDI➣Standard Data Interface |
| SDI➣Système de Détection Incendie (French: Fire Detection System) |
| SDI➣Subsidy Dependence Index (finance) |
| SDI➣Self Defense, Inc. (various organizations) |
| SDI➣System Development Inc. |
| SDI➣Strengthing Democratic Institutions Project |
| SDI➣Syndicat des Indépendants |
| SDI➣Statistics on Depository Institutions (FDIC) |
| SDI➣System Design and Integration Pty. Ltd. (Australia) |
| SDI➣Status of Democracy Index |
| SDI➣Single Damascene Interconnect (semiconduction technology) |
| SDI➣Source Destination Identifier (avionics) |
| SDI➣Science Data Interface |
| SDI➣Sustainable Development Innovation |
| SDI➣Special Duty Identifier |
| SDI➣Stamp Dealers International |
| SDI➣Soil Dryness Index |
| SDI➣Sage Database Inquiry |
| SDI➣Steel Dynamics, Incorporated |
| SDI➣Saugdiesel Direct Injection (engine) |
| SDI➣Switched Digital International |
| SDI➣Systemically Dangerous Institution (economics) |
| SDI➣Secure Dial-in |
| SDI➣Standard Disbursing Initiative (US DoD) |
| SDI➣Suction Diesel Injection |
| SDI➣Supplier Development Initiative (Canada) |
| SDI➣Standard Diesel Injection |
| SDI➣Stress Day Index |
| SDI➣Superior Deicers Inc. (manufacturers of aviation ground support equipment) |
| SDI➣Service Delivery Index (also seen as SDIX) |
| SDI➣Spatial Domain Interferometry |
| SDI➣Soft Decision Information |
| SDI➣Safety Data Initiative |
| SDI➣Ships Drawing Index |
| SDI➣Software Digest Incorporated |
| SDI➣Spectroscopic Diagnostics, Inc (Torrance CA) |
| SDI➣Survey Detection and Identification |
| SDI➣Subtitling & Dubbing International |
| SDI➣Stork Digital Imaging BV (Netherlands) |
| SDI➣Sistemas Detectores de Intrusão |
| SDI➣Sales-Diffusion Index |
| SDI➣Simulation Data Interface |
| SDI➣Same Direction Interference |
| SDI➣Selective Description Item |
| SDI➣Solution Datacom Incorporated |
| SDI➣Smart Database Interface |
| SDI➣Self-Descriptive Inventory (psychology) |
| SDI➣Standard Disk Interface/Interconnect |
| SDI➣Ship Data Index |
| SDI➣Special Delivery Instruction |
| SDI➣Scanned Document Image |
| SDI➣Shaped Dielectric Insert |
| SDI➣Sudden Death in Infancy |
| SDI➣Subjective Disposable Income |
| SDI➣Sales Distribution Information |
