| Abbreviation | Definition |
|---|---|
| HALO | Hypersonic Aircraft Launch Option |
| HALO | Hypersonic Air-Launched Offensive |
| HAMM | Historic Aviation Memorial Museum |
| HAOLA | Hold Aircraft On Low Approach |
| HAPI | Helicopter Approach Path Indicator |
| HART | Hypervelocity Aircraft Rocket, Tactical |
| HASEL | Height, Area, Security, Engine. Lookout |
| HASELL | Height, Airframe, Security, Engine. Location, Lookout |
| HAT | Height Above Touchdown |
| HAWT | Handheld Aircraft Wire Tester |
| HBB | Hot Battery Bus |
| HCAA | Hellenic Civil Aviation Authority |
| HCM | Hydraulic Control Module |
| HCR | Helicopter Crew Reality |
| HCU | HUD Combiner Unit |
| HCU | Hydraulic Control Unit |
| HDD | Head-Down Display |
| HDF | Hot Draped Formed |
| HEAA | High Explosive Anti Aircraft |
| HEAI | Harbin Embraer Aircraft Industry |