| Acronym | Definition |
|---|
| LRI | Long-range Research Initiative |
| LRI | Laboratoire de Recherche en Informatique |
| LRI | Lerner Research Institute (Cleveland Clinic) |
| LRI | Livestock Research Institute (Bangladesh) |
| LRI | Leicester Royal Infirmary (hospital in Leicester, UK) |
| LRI | Lower Respiratory Infection |
| LRI | Legal Resource Index |
| LRI | Law Reform Institute |
| LRI | Long Range Interceptor |
| LRI | Limbal Relaxing Incision (eye surgery) |
| LRI | Lubricants Review Institute (SAE International) |
| LRI | Leadership Research Institute (Rancho Santa Fe, CA) |
| LRI | Long Run Initiative (Zeitz Foundation) |
| LRI | Lightning Rod Insulator |
| LRI | Laughing Rabbit, Inc. |
| LRI | Lunar Research Institute |
| LRI | Logistics Readiness Inspection |
| LRI | Les Robinson Invitational (Atlantic Coast Conference tournament) |
| LRI | Line Replaceable Item |
| LRI | Long-Range International |
| LRI | Liverpool Royal Infirmary (UK) |
| LRI | Line Replacement Item |
| LRI | Low Resolution Image |
| LRI | Limited Range Intercept |
| LRI | Life Roles Inventory |
| LRI | Limited/Laser Range of Intercept |
| LRI | Left-Right Indicator |
| LRI | Land Reporting Initiative |
| LRI | Lawndale Railway & Industrial Company |
| LRI | Loker Research Institute (University of Southern California) |