| Abbreviations | Meaning |
 | HRSA | U. S. Health Resources And Services Administration |
 | HRUK | Heart Rhythm UK |
 | HS | Hand Surgery [periodical] |
 | HS | Histiocyte Society |
 | HSA | Health And Safety Authority (Ireland) |
 | HSB | HRSA Healthcare Systems Bureau |
 | HSC | Huntington Society Of Canada. Société Huntington Du Canada |
 | HSDB | Hazardous Substances Data Bank |
 | HSE | Health And Safety Executive |
 | HSF | Heart Surgery Forum |
 | HSF | Hidradenitis Suppurativa Foundation |
 | HSF | Hôpital Sans Frontière. Hospital Without Frontiers. Ziekenhuis Zonder Grenzen |
 | HSF / HWB | Homéopathes Sans Frontières / Homeopaths Without Borders |
 | HSJ | Health Service Journal |
 | HSLC | Healtlh Sciences Libraries Consortium |
 | HSLI | Health Science Librarians Of Illinois |
 | HSLM | Health Sciences Libraries Of Minnesota |
 | HSMC | Health Services Management Centre |
 | HSQ | Health Status Questionnaire |
 | HSR | Health Services Research [periodical] |
 | HSRPROJ | Health Services Research Projects In Progress |
 | HSRR | Health Services And Sciences Research Resources |
 | HSS | History Of Science Society |
 | HSSCD | Health Surveillance System For Communicable Diseases |
 | HST | Health Systems Trust |
 | HSTAR | HealthSTAR. Health Services/Technology Assessment Research |
 | HSTAT | Health Services/Technology Assessment Texts |
 | HSU | Health Services Union Of Australia |
 | HT | Histotechnician |
 | HT | Horticultural Therapy |
 | HTA | Health Technology Assessment Database (Cochrane Library) |
 | HTA (UK) | Health Technology Assessment Programme |
 | HTA / ETS | Health Technology Assessment / Évaluation Des Technologies De La Santé |
 | HTAI | Health Technology Assessment International |
 | HTIS | Hazardous Technical Information Services |
 | HTL | Histotechnologist |
 | HUE | Health Understanding And Education [periodical] |
 | HUGEM | Human Genome Education Model |
 | HUGENET | Human Genome Epidemiology Network |
 | HUGO | Human Genome Organisation |
 | HVO | Health Volunteers Overseas |
 | HWB / HSF | Homeopaths Without Borders / Homéopathes Sans Frontières |
 | HYPADD | Hyperactivité Adolescents Et Adultes |
 | HYPSOS | Hyperactivité SOS Enfants (Genève) |
 | I-ACT | International Association For Colon Hydrotherapy |
 | IAACD | Indian Academy Of Aesthetic & Cosmetic Dentistry |
 | IAACN | International And American Associations Of Clinical Nutritionists |
 | IAAP | International Association Of Applied Psychology |
 | IAAS | International Association For Ambulatory Surgery |
 | IAASM | International Academy Of Aviation And Space Medicine. Académie Internationale De Médecine Aéronautique Et Spatiale |