| Acronym | Definition |
|---|
| HSD➣Human Services Directory (various locations) |
| HSD➣Hydraulic System Design (engineering) |
| HSD➣Honest Significant Difference (statistical test) |
| HSD➣Hybrid Synergy Drive (Toyota/Lexus) |
| HSD➣Health Service Delivery (various locations) |
| HSD➣Human Services Department |
| HSD➣Health and Social Development (various organizations) |
| HSD➣High Single Digit (finance) |
| HSD➣Harrisburg School District (Harrisburg, PA) |
| HSD➣High Speed Data |
| HSD➣High Speed Diesel |
| HSD➣High School Diploma |
| HSD➣High Speed Dubbing |
| HSD➣High Speed Draft |
| HSD➣Hybrid Synergy Drive |
| HSD➣High Speed Drive |
| HSD➣Host Storage Domain |
| HSD➣High Safety Drive |
| HSD➣High School Dropout |
| HSD➣Hillsboro School District (Hillsboro, OR) |
| HSD➣Highline School District (Washington) |
| HSD➣Human Systems Dynamics (psychology) |
| HSD➣Hawaii Skin Diver |
| HSD➣Health Service District (Australia) |
| HSD➣Hardware Software Development |
| HSD➣Historical Society of Delaware |
| HSD➣Hazelwood School District |
| HSD➣Housing Services Division (various locations) |
| HSD➣Tukey's Honestly Significant Difference (aka the Tukey A Procedure; statistics; analysis) |
| HSD➣High School Drama |
| HSD➣History's Strongest Disciple (manga; Kenichi: The Mightiest Disciple) |
| HSD➣High Speed Digital |
| HSD➣Health Services Department |
| HSD➣Hypoactive Sexual Desire |
| HSD➣Horizontal Situation Display |
| HSD➣Healthcare Solutions Division (various locations) |
| HSD➣Hardanger Sunnhordlandske Dampskipsselskap (Norway) |
| HSD➣Hypertonic Saline Dextran |
| HSD➣Hip Stability Drill (US Army) |
| HSD➣High Side Driver (electrical engineering) |
| HSD➣Highway Safety Division (US and Canada) |
| HSD➣Home Satellite Dish |
| HSD➣High Sexual Drive |
| HSD➣Hartford Securities Distribution Company, Inc. |
| HSD➣Hydrographic Surveys Division (NOAA) |
| HSD➣Health and Safety Division |
| HSD➣High School of Dundee (Scotland) |
| HSD➣Human Systems Division |
| HSD➣Home Delivery Service |
| HSD➣Hicks Special Draught (beer) |
| HSD➣High School Diplomats (student program) |
| HSD➣Heat Sensing Device |
| HSD➣High Strength Deformed (steel) |
| HSD➣High Speed Deflectograph |
| HSD➣Hardstyle Dance |
| HSD➣17-@beta Hydroxysteroid Dehydrogenase III Deficiency |
| HSD➣Hamilton Standard Division |
| HSD➣High Sulphur Diesel |
| HSD➣Hot-Swap Drive |
| HSD➣High Speed Drill |
| HSD➣Hard Sphere Decoding |
| HSD➣Head Supported Device(s) |
| HSD➣High School Dublin |
| HSD➣Health and Safety Document |
| HSD➣Hot Spot Detector |
| HSD➣Honestly Significant Difference technique (ITU-T) |
| HSD➣Hot-Swappable Dimensions |
| HSD➣Have Sweet Dreams (internet slang) |
| HSD➣Home School Debate |
| HSD➣Hyde School of Dance (UK) |
| HSD➣Hot Surfer Dude |
| HSD➣High Sierra Drifters (Road Flat, CA) |