| Acronym | Definition |
|---|
| LTI➣Linear Time Invariant |
| LTI➣Long-Term Illness |
| LTI➣Loan to Income (ratio) |
| LTI➣Lite Touch Installation (software) |
| LTI➣Long Term Incentive (NZ) |
| LTI➣Lost Time Injury |
| LTI➣London Taxis International |
| LTI➣Leadership Training Institute |
| LTI➣Lingua Tertii Imperii (language of the NAZI empire, Latin) |
| LTI➣Lighting Technologies, Inc. (various locations) |
| LTI➣Lost Time Incident |
| LTI➣Left Thumb Impression (personal identification) |
| LTI➣Language Technologies Institute (Carnegie Mellon University; Pittsburgh, PA) |
| LTI➣London Taxis International (company) |
| LTI➣Learning Tree International |
| LTI➣Lincoln Technical Institute (automotive education) |
| LTI➣Life Technologies, Inc. |
| LTI➣Language Training Institute (various locations) |
| LTI➣Learning Tools Interoperability (IMS Global Learning Consortium, Inc.) |
| LTI➣Land Title Institute (American Land Title Association) |
| LTI➣LeTourneau Technologies, Inc. |
| LTI➣Laser Thermal Imaging (Kodak) |
| LTI➣Leadership Training Initiative (various organizations) |
| LTI➣Library Technologies, Inc. (Willow Grove,PA) |
| LTI➣Long Term Inventory (various companies) |
| LTI➣Lucent Technologies, Inc. |
| LTI➣London Taxi Corporation (London; UK) |
| LTI➣Limited Technical Inspection |
| LTI➣Learning Technology Institute |
| LTI➣Lowell Technological Institute (Massachusetts) |
| LTI➣Live Training Instrumentation |
| LTI➣Ladder Towers International (fire engine ladder tower manufacturer) |
| LTI➣Licentiate of the Textile Institute |
| LTI➣Laser Thermal Implantation |
| LTI➣Listowel Technology Inc |
| LTI➣Laboratoire de Toxicologie Industrielle (French: Laboratory for Industrial Toxicology; Belgium) |
| LTI➣LORAN-C Timing Interface (Sprint) |
| LTI➣Lower Tactical Internet (battlefield communications network for echelons at brigade and below) |
| LTI➣Language Technology Incorporated |
| LTI➣Learning Tree Information |
| LTI➣Longtime Integration |
| LTI➣Licence de Transport Internationale (France) |
| LTI➣Louisiana Technical Institute |
| LTI➣Lower Thermosphere and Ionosphere |
| LTI➣Last Two International (radio) |