| HHS | Haarlem Hardcore Source 
| Others |
| HHS | Harlem Hardcore Source
| Others |
| HHS | Harrisonburg High School
| Others |
| HHS | Hawaiian Historical Society
| Others |
| HHS | Hayward High School
| Others |
| HHS | Headquarters and Headquarters Section
| Others |
| HHS | Health and Human Sciences
| Others |
| HHS | Health Human Services
| Others |
| HHS | Hearing Handicap Scale
| Others |
| HHS | Helena High School
| Others |
| HHS | Hemlock High School
| Others |
| HHS | Henderson Handicapped School
| Others |
| HHS | Hendersonville High School
| Others |
| HHS | Heritage High School
| Others |
| HHS | Hicom Host System
| Others |
| HHS | Hierarchical Heterogeneous Specifications
| Others |
| HHS | Highland High School
| Others |
| HHS | Hillsdale High School
| Others |
| HHS | Hipath Host System
| Others |
| HHS | Historical Harp Society
| Others |
| HHS | Holgate High School
| Others |
| HHS | Home Health Services
| Others |
| HHS | Homestead High School
| Others |
| HHS | Hospital Hobo Syndrome
| Others |
| HHS | Hu Hui Sheng
| Others |
| HHS | HumbleHomeStore
| Others |
| HHS | hyper-osmotic hyperglycemic state
| Others |
| HHS | Hyperosmolar Hyperglycemic State
| Others |
| HHS | U. S. Department of Health and Human Services
| Others |