| Acronym | Definition |
|---|
| LRTI➣Lower Respiratory Tract Infections |
| LRTI➣Lower Respiratory Tract Illness |
| LRTI➣Ligament Reconstruction Tendon Interposition |
| LRTI➣Legal Research and Training Institute (est. 1949; Ministry of Justice; South Korea) |
| LRTI➣Long Range Thermal Imaging |
| LRTI➣Lodging, Restaurant and Tourism Index (Purdue University; Indiana) |