| Acronym | Definition |
|---|
| HSSM➣High Speed Switch Module |
| HSSM➣Humane Society of South Mississippi (Gulfport, MS) |
| HSSM➣Hydrocarbon Spill Screening Model (US EPA) |
| HSSM➣HiCommand Storage Services Manager (Hitachi) |
| HSSM➣Highway Security Sensitive Materials (Transportation Security Administration; US DHS) |
| HSSM➣Hierarchical Software State Machine |
| HSSM➣horse serum-supplemented medium |
| HSSM➣Humane Society of Southwestern Michigan (Benton Harbor, MI) |
| HSSM➣High School Sports Magazine (website) |
| HSSM➣High School Sports Media |
| HSSM➣Hon Sui Sen Memorial (Singapore) |
| HSSM➣High Speed Scanning Module (Knowledgeone Corporation) |
| HSSM➣Hard Sector State Machine |
| HSSM➣Health and Social Services Managers |
| HSSM➣High Spindle Speed Machining |
| HSSM➣High Speed Standoff Missile |
| HSSM➣High Speed Spindle Motor |
| HSSM➣Historical and Scientific Society of Manitoba (Canada) |
| HSSM➣Harris Solid State Malaysia |
| HSSM➣High School of Sports Management (Brooklyn, NY) |
| HSSM➣Hierarchical Simultaneous Set Membership |
| HSSM➣Hot Stove Saturday Morning |
| HSSM➣High School Science & Mathematics Faculty Program (United States Army) |
| HSSM➣Hidden State Shape Model |
| HSSM➣High School Student Ministry |
| HSSM➣Highway System Status Maps (state of Georgia) |
| HSSM➣Hunter Specialty Steel Mill (project) |
| HSSM➣Humanities, Social Science and Management |
| HSSM➣Hotel and Support Services Manager |
| HSSM➣Head Start St Maries |
| HSSM➣Hansen Stahl Sales and Marketing |
| HSSM➣Human Systems Strategic Management (East Lansing, MI) |
| HSSM➣Hardened Space Sensor Model (US NASA) |
| HSSM➣Health System Simulation Modelling |
| HSSM➣Harris Semiconductor Sector - Mountaintop |
| HSSM➣High Speed Sorting Machine (US Postal Service) |
| HSSM➣Hitachi Storage Service Manager |
| HSSM➣Hicks-Slutsky Substitution Matrix |
| HSSM➣Housing Superannuation Spreadsheet Model (Australia) |