| Term | Full Form | Category |
|---|---|---|
| HIAD | Handbook of Instructions for Aircraft Designers | Others |
| HIAD | Handheld Interrogation Audit Device | Others |
| HIAD | Health in All Decisions | Others |
| HIAD | Health Insurance Access Database | Others |
| HIAD | Helsinki International Arbitration Day | Others |
| HIAD | Hydrogen Incident and Accident Database | Others |
| HIAD | Hypersonic Inflatable Aerodynamic Decelerator | Others |
| HIAD | Hypersonic Inflatable Aerodynamic Decelerators | Others |