| Abbreviation | Definition |
|---|---|
| HSMS | High Speed Message Services |
| HSP | Host Signal Processing |
| HSS | High Strength Substrate |
| HT | High Tension |
| HTCS | High Tc (critical temperature) Superconductor |
| HTE | High Temperature Electronics |
| HTE | High Temperature Elongation |
| HTEP | High Tech Electronic Platform |
| HTEP | High Technology Electrical Production |
| HTH | Head To Head |
| HTIB | Home Theater In a Box |
| HTL | High-Threshold logic |
| HTML | HyperText Markup Language |
| HTMS | High Throughput Microscopic Scanning |
| HTO | High-Temperature Oxidation |
| HTRB | High-Temperature Reverse Bias |
| HTS | High Temperature Superconductor |
| HTSC | High Temperature SuperConductor |
| HTTP | Hyper Text Transper Protocol |
| HTTPS | Hyper Text Transper Protocol Secure |