| Acronym | Definition |
|---|
| RIL | Rest in Love |
| RIL | Reduced Impact Logging |
| RIL | Results in Learning (aka Randy Smith Training Solutions) |
| RIL | Radio Interface Layer |
| RIL | Reparable Item List |
| RIL | Recombinant Inbred Lines |
| RIL | Reduction in Lethality |
| RIL | Répertoire d'Immeubles Localisés (French geographical database) |
| RIL | Read It Later (Internet application) |
| RIL | Res Ipsa Loquitur (Latin: The Thing Speaks for Itself; legal negligence) |
| RIL | Radio des Iles (French radio station) |
| RIL | Repairable Items List |
| RIL | Responsible Individuals List (North Carolina) |
| RIL | Réalisations Immobilieres Lorraines (French real estate company) |
| RIL | Reliance Industries Limited, India |
| RIL | Royal Interocean Lines (Royal Java-China-Paketvaart Lines) |
| RIL | Research Information Letter |
| RIL | Runway Identification Lights |
| RIL | Radar Innovations Laboratory (University of Oklahoma) |
| RIL | Regulatory Interpretation Letter |
| RIL | Routine Inspection List |
| RIL | Reinsurance Incurred Losses (insurance) |
| RIL | Regenerative Immunophilin Ligand |
| RIL | Repair Item List |