| H | Hug | - | Chemistry |
| H | AlH AlAltitude Rate | - | Organizations |
| H | AlH AlHazardous (Task Classification) | - | Organizations |
| H | AlH AlHead | - | Organizations |
| H | AlH AlHenry (Si Unit) | - | Organizations |
| H | AlH AlHigh | - | Organizations |
| H | AlH AlHorizontal | - | Organizations |
| H | AlH AlHot | - | Organizations |
| H | AlH AlHours | - | Organizations |
| H | AlH AlMomentum | - | Organizations |
| H | AlH Altitude | - | Organizations |
| H | 2Hydrogen | - | Organizations |
| H | 20Water | - | Organizations |
| H | MHinge Mount | - | Organizations |
| H | /'EHeat Exchanger | - | Organizations |
| H | 1STHistory | - | Organizations |
| H | EPAHigh Efficiency Particle Accumulator | - | Organizations |
| H | EPAHigh Efficiency Particle Air (Filter) | - | Organizations |
| H | LTLHigh Level Test Language | - | Organizations |
| H | Hug | - | Sms Text Smileys and Emoticons |
| H | Hecto | - | Astronomy |
| H | Henry - Hydrogen | - | Astronomy |
| H | Henry | - | Business and Finance |
| H | Hecto | - | Business and Finance |
