| HSD | Hadron String Dynamics 
| Others |
| HSD | Hamilton Standard Division
| Others |
| HSD | Hand Shock Dampening
| Others |
| HSD | Handlebar Stability Design
| Others |
| HSD | Hardanger Sunnhordlandske Dampskipsselskap
| Others |
| HSD | Hardware Systems Division
| Others |
| HSD | Harmony School of Discovery
| Others |
| HSD | Harris Semiconductor Division
| Others |
| HSD | Haul Stuff Daily
| Others |
| HSD | Have Sweet Dreams
| Others |
| HSD | Hawaii Skin Diver
| Others |
| HSD | Hawthorne School District
| Others |
| HSD | Hazelwood School District
| Others |
| HSD | Hc Svnt Dracones
| Others |
| HSD | Headlight Sight Distance
| Others |
| HSD | Health Sciences Division
| Others |
| HSD | Health Service District
| Others |
| HSD | Health Systems Development
| Others |
| HSD | Health Systems Division
| Others |
| HSD | Heat Storage Device
| Others |
| HSD | Heliophysics Science Division
| Others |
| HSD | Hic Sunt Dracones
| Others |
| HSD | Hicks Special Draught
| Others |
| HSD | Hierarchical Structured Diagram
| Others |
| HSD | High Safety Drive
| Others |
| HSD | High School Diploma
| Others |
| HSD | High School Diplomats
| Others |
| HSD | High School Drags
| Others |
| HSD | High Sex Drive
| Others |
| HSD | High Side Driver
| Others |
| HSD | High Silt Density
| Others |
| HSD | High Single Digit
| Others |
| HSD | High Speed Data
| Others |
| HSD | High Speed Diesel
| Energy, Fossil Fuel, Transport |
| HSD | High Speed Draft
| Others |
| HSD | High Speed Drive
| Others |
| HSD | High Speed Dubbing
| Others |
| HSD | High Strength and Ductility
| Others |
| HSD | High Sulfur Diesel
| Others |
| HSD | Highly Secured Data
| Others |
| HSD | Highway Safety Division
| Others |
| HSD | Hillsboro School District
| Others |
| HSD | Histogram Shape Dependent
| Others |
| HSD | Hitachi Shin Din
| Others |
| HSD | Holistic Software Development
| Others |
| HSD | Home Satellite Dish
| Others |
| HSD | Home Shopping Delivered
| Others |
| HSD | Honestly Significant Difference
| Others |
| HSD | Honestly Significantly Different
| Others |
| HSD | Horizontal Situation Display
| Others |
| HSD | Host Specificity for DNA
| Others |
| HSD | Host Storage Domain
| Others |
| HSD | Hot Spot Detector
| Others |
| HSD | Hotel Schools of Distinction
| Others |
| HSD | Hue Saturation Darkness
| Others |
| HSD | Human and Social Development
| Others |
| HSD | Human and Social Dimensions
| Others |
| HSD | Human Intelligence Support Detachment
| Others |
| HSD | Human Services Department
| Others |
| HSD | Human Subjects Division
| Others |
| HSD | Human Systems Dynamics
| Others |
| HSD | Hybrid Synergy Drive
| Others |
| HSD | Hydraulic Systems Division
| Others |
| HSD | Hypermobility spectrum disorders
| Others |