| HHT | Hand Held Terminal
| Others |
| HHT | Hand Held Tester
| Others |
| HHT | Hand Held Transceivers
| Others |
| HHT | Head Halter Traction
| Others |
| HHT | Head Head Tail
| Others |
| HHT | Headquarters and Headquarters Troop
| Others |
| HHT | Heanor Haulage Transport
| Others |
| HHT | Heanor Heavy Transport
| Others |
| HHT | Heavy Heavy Truck
| Others |
| HHT | Hereditary Haemorrhagic Telangiectasia
| Others |
| HHT | Hereditary Hemorrhage Telangiectasia
| Others |
| HHT | Hereditary Hemorrhagic
| Others |
| HHT | Hereditary Hemorrhagic Telangectasia
| Others |
| HHT | Hereditary Hemorrhagic Telangiectasia
| Others |
| HHT | Hereditary Hemorrhagic Telegiectansia
| Others |
| HHT | High Heat Time
| Others |
| HHT | Higher Harmonic Terms
| Others |
| HHT | Hip Hop Therapy
| Others |
| HHT | Hitachi High Technologies
| Others |
| HHT | House Hunting Trip
| Others |