| HIA | Habbo Intelligence Agency 
| Others |
| HIA | Haemagglutination Inhibition Assay
| Others |
| HIA | Halloween Industry Association
| Others |
| HIA | Halls Internet Access
| Others |
| HIA | Hamad International Airport
| Others |
| HIA | Hand Immobilization Attack
| Others |
| HIA | Handmade in America
| Others |
| HIA | Hardware, Infrastructure and Associated (services) British
| Others |
| HIA | Harrisburg International Airport
| Others |
| HIA | Hauppauge Industrial Association
| Others |
| HIA | Health Impact Assessment
| Others |
| HIA | health impact assessmentBritish
| Others |
| HIA | Health Information Administration
| Others |
| HIA | Health Information Alliance
| Others |
| HIA | Health Initiative of the Americas
| Others |
| HIA | Health Insurance Associate
| Others |
| HIA | Hearing Industries Association
| Others |
| HIA | Hearing Industry Association
| Others |
| HIA | Hemispheric Institute on the Americas
| Others |
| HIA | Hemp Industries Association
| Others |
| HIA | Hepatic Intra-Arterial
| Others |
| HIA | Heritage Impact Assessment
| Others |
| HIA | High Impact ActionsBritish
| Others |
| HIA | Historic Impact Assessment
| Others |
| HIA | History in Action
| Others |
| HIA | Hmong International Academy
| Others |
| HIA | Hobby Industries Association
| Others |
| HIA | Hobby Industry Association
| Others |
| HIA | Holographic Imaging Apparatus
| Others |
| HIA | Home Investment Advisors
| Others |
| HIA | Honesty Integrity Accuracy
| Others |
| HIA | Hope Is Alive
| Others |
| HIA | Hot Ion Analyzer
| Others |
| HIA | Housing Improvement Agency British
| Others |
| HIA | Housing Industry Association
| Others |
| HIA | Human Intestinal Absorption
| Others |
| HIA | Hunger In America
| Others |
| HIA | Hyogo International Association
| Others |