| Acronym | Definition |
|---|
| HIAS➣Hebrew Immigrant Aid Society |
| HIAS➣Hospital Infantil Albert Sabin (Portuguese: Albert Sabin Children's Hospital; Fortaleza, Brazil) |
| HIAS➣Hampshire Industrial Archaeology Society (UK) |
| HIAS➣Hotel Industry Apprenticeship Scheme |
| HIAS➣Homeland Insecurity Advisory System (political group; Washington, DC) |
| HIAS➣high intensity active sonar |