| Acronym | Definition |
|---|
| LIR➣Labor and Industrial Relations (various organizations) |
| LIR➣Local Internet Registry |
| LIR➣Loi Concernant l'Impôt sur le Revenu (French: Income Tax Law; Luxembourg) |
| LIR➣Load Instruction Register |
| LIR➣Lithium Ion Recharge |
| LIR➣Let It Rip |
| LIR➣Location Information Request |
| LIR➣Library Instruction Room (various locations) |
| LIR➣Laboratory Investigation Report |
| LIR➣Laboratoires Internationaux de Recherche (International Research Laboratories Association) |
| LIR➣Lexicon Istoric Retic (Swiss encyclopedia) |
| LIR➣Line Item Review (various organizations) |
| LIR➣Ley del Impuesto A La Renta (Spanish: Income Tax Law) |
| LIR➣Liberia, Costa Rica - Liberia (Airport Code) |
| LIR➣London Irish Rifles (UK regiment) |
| LIR➣Location Inventory Report |
| LIR➣Laboratory Implementation Requirements |
| LIR➣Laser Incident Report |
| LIR➣Link Incident Report (Cisco) |
| LIR➣Low Intermediate Representation |
| LIR➣Load Instruction Report |
| LIR➣Lateral Impulse Reaction |
| LIR➣Lepidoptera of Iran |