IRUG
| Acronym | Definition |
|---|---|
| IRUG | Infrared and Raman Users' Group |
| IRUG | Invicta RISC (Reduced Instruction Set Computing) OS (Operating System) Users Group (Ramsgate, Kent, UK) |
| IRUG | Ivybridge Rail User's Group (UK) |
| IRUG | IBM (International Business Machines Corporation) Retail User Group (Strongsville, OH) |