| HIIP | Harvard Information Infrastructure Project 
| Others |
| HIIP | Hatteras Island Internship Program
| Others |
| HIIP | Health Information and Intelligence Platform
| Others |
| HIIP | Health Information Infrastructure Plan
| Others |
| HIIP | Health Infrastructure Investment Program
| Others |
| HIIP | Health Insurance Information Program
| Others |
| HIIP | HHS Innovation Internship Program
| Others |
| HIIP | High Impact Incarceration Program
| Others |
| HIIP | High Impact Intervention Program
| Others |
| HIIP | High Intensity Interval Pilates
| Others |
| HIIP | High Intensity Interval POLE
| Others |
| HIIP | Hispanic Immigrant Integration Project
| Others |
| HIIP | Home Improvement Incentive Program
| Others |
| HIIP | Hospital Intensive Insulin Program
| Others |
| HIIP | Human Insulin Inhalation Powder
| Others |
| HIIP | Hydrocarbon Initially In Place
| Others |