HTU
| Acronym | Definition |
|---|---|
| HTU | Hydrothermal Upgrading (energy development) |
| HTU | Handheld Terminal Unit |
| HTU | Hundreds, Tens and Units (mathematics) |
| HTU | Hate You |
| HTU | Helicopter Training Unit (US Navy aviation unit designation used in from 1950 to 1957) |
| HTU | Hydrodynamic Test Unit |
| HTU | How to Universe |
| HTU | Hispanic Theological Union |
| HTU | HDSL Terminal/Transmission Unit |
| HTU | Handheld Thermal Unit |
| HTU | Hourly Thermal Unit |
| HTU | Huston-Tilostson University (Austin, TX) |