| Acronym | Definition |
|---|
| LTT | Linus Tech Tips |
| LTT | Less Than Three (game) |
| LTT | Libya Telecom and Technology (est. 1997) |
| LTT | Lateral Thigh Trainer (exercise equipment) |
| LTT | Lymphocyte Transformation Test |
| LTT | Lexical Token Type |
| LTT | Learning Through Technology |
| LTT | Lingenfelter Twin Turbo |
| LTT | Logical Terminal Table |
| LTT | Long Term Temporary |
| LTT | Learning, Teaching and Training |
| LTT | Long-Term Training |
| LTT | Lews Therin Telamon (Wheel of Time series) |
| LTT | Laboratory of Thermal Turbomachines (National Technical University of Athens; Athens, Greece) |
| LTT | Lavender Top Tube |
| LTT | Learning through Teaching |
| LTT | Live Tissue Training |
| LTT | Luyten Two-Tenths Catalogue (stars) |
| LTT | Limited Training Team (US Navy) |
| LTT | Light Tactical Trailer |
| LTT | Logistics Training Team (various companies) |
| LTT | Line to Take |
| LTT | Linux Tips and Tricks |
| LTT | Lunar Transit Telescope |
| LTT | Limited Team Training |
| LTT | Beryllium Lymphocyte Transformation Test (also seen as BELT and BeLPT) |
| LTT | Local Trap Time |
| LTT | Long Term Throughput |
| LTT | Localized Thermal Therapy |
| LTT | Live Training Transformation (military; set of common components to satisfy live training instrumentation requirements) |
| LTT | Lower Top Tube (bicycles) |
| LTT | Limited Technology Transfer |
| LTT | Logistics Between Today and Tomorrow (Netherlands) |
| LTT | Left-Tailed Test |
| LTT | Late to Test (alarms) |