| H&SS | Human & Social Sciences 
| Others |
| HSS | Hallow Structural Section
| Others |
| HSS | Hap Seng Star
| Others |
| HSS | Happiness Success and Style
| Others |
| HSS | Harmony School of Science
| Others |
| HSS | Health Safety and Security
| Others |
| HSS | Health Service Support
| Others |
| HSS | Health Service System
| Others |
| HSS | Health system strengthening
| Others |
| HSS | Health Systems Strengthening
| Others |
| HSS | Heartland Sprint Series
| Others |
| HSS | Heat Sink Support
| Others |
| HSS | Heat Stable Salt
| Others |
| HSS | Heat Stable Salts
| Others |
| HSS | Heat Strengthened Steel
| Others |
| HSS | Heavy Spooling Shotgun
| Others |
| HSS | Heavy Super Stock
| Others |
| HSS | Helmet Sight System
| Others |
| HSS | Hemophilia Surveillance System
| Others |
| HSS | Henry Sweet Society for the History of Linguistic Ideas
| Others |
| HSS | Hey Soul Sister
| Others |
| HSS | Hierarchical Secure System
| Others |
| HSS | Hierarchical Style Sheets
| Others |
| HSS | Hifi Sports Smart
| Others |
| HSS | High School Story
| Others |
| HSS | High Speed Reader
| Others |
| HSS | High Speed Sea
| Others |
| HSS | High Speed SerDes
| Others |
| HSS | High Speed Serial
| Others |
| HSS | High Speed Serial interface
| Others |
| HSS | High Speed Ship
| Others |
| HSS | High Speed Sintering
| Others |
| HSS | High Speed Steel
| Others |
| HSS | High Speed Subshelf
| Others |
| HSS | High Speed Surfacing
| Others |
| HSS | High Speed Sync
| Others |
| HSS | High Speed Synchronization
| Others |
| HSS | High Speed Synchronize
| Others |
| HSS | High Speed System
| Others |
| HSS | High Static Swept
| Others |
| HSS | High Strength Silica
| Others |
| HSS | High Strength Steel
| Others |
| HSS | High Strength Substrate
| Others |
| HSS | High Stress and Strain
| Others |
| HSS | High-speed Sea Service
| Others |
| HSS | Higher Strength Steel
| Others |
| HSS | Highways of Statewide Significance
| Others |
| HSS | Hike, Stalk, Shoot
| Others |
| HSS | Hindu Swayamsevak Sangh
| Others |
| HSS | Hire Sales and Service
| Others |
| HSS | Hissar, India
| Others |
| HSS | History of Science Society
| Others |
| HSS | Hit Song Science
| Others |
| HSS | Hollow Structural Section
| Others |
| HSS | Hollow Structural Solutions
| Others |
| HSS | Holocaust Survivor Syndrome
| Others |
| HSS | Holy Spirit School
| Others |
| HSS | Home Subscriber Server
| Others |
| HSS | Homo Sapiens Sapiens
| Others |
| HSS | Horizontal Stretch or Shrink
| Others |
| HSS | Hospital for Special Surgery
| Others |
| HSS | Hospital for Special Surgery [N.Y.]
| Others |
| HSS | Hospitality Staffing Solutions
| Others |
| HSS | Host Specific Service
| Others |
| HSS | Hosting Solution Software
| Others |
| HSS | HSBC Security Services
| Others |
| HSS | Huda Sharawi School
| Others |
| HSS | Hughes Software Systems
| Others |
| HSS | Hum Sing Sing
| Others |
| HSS | Human Subjects System
| Others |
| HSS | Human Surface Shader
| Others |
| HSS | Humanities and Social Science
| Others |
| HSS | Humber Super Snipe
| Others |
| HSS | Humbucker Single Single
| Others |
| HSS | Hungarian Simulation Society
| Others |
| HSS | Hunter Sensor Suite
| Others |
| HSS | Hunter Sensor System
| Others |
| HSS | Huntington Surf and Sport
| Others |
| HSS | Hydraulic Sub-system Simulator
| Others |
| HSS | Hydronic System Solution
| Others |
| HSS | Hydropneumatic Suspension System
| Others |
| HSS | Hypersonic Sound
| Others |
| HSS | Hyundai Smart Sense
| Others |
| HSS | Senior Seminar
| Others |