| HHT | Hand-Held Terminal | 手持终端 |
| HHT | Heinrich Hertz Telescope | 海因里希赫兹望远镜 |
| HHT | Headquarters Troop | 总部部队 |
| HHT | Headquarters & Headquarters Troop | 总部及总部的队伍 |
| HHT | Hereditary Hemorrhagic Telangiectasia (Osler-Rendu-Weber disease) | 遗传性出血性毛细血管扩张症（奥斯勒-伦杜-韦伯病） |
| HHT | Halton Housing Trust (UK) | Halton住房信托（英国） |
| HHT | Helping Hand Trust | 帮手信托 |
| HHT | House Hunting Trip | 房屋狩猎之旅 |
| HHT | Hereditary Hemorrhagic Telangiectasia Foundation International | 国际遗传性出血性毛细血管扩张基金会 |
| HHT | Hereditary Hemorrhagic Telangiectasia | 遗传性出血性毛细血管扩张症 |
| HHT | hydroxyheptadecatrienoic acid | 羟基十七碳三烯酸 |
| HHT | head halter traction | 头部吊索牵引 |
| HHT | heterotopic heart transplantation | 异位心脏移植 |
| HHT | Headquarters and Headquarters Troop | 司令部与司令部连 |