| Acronym | Definition |
|---|
| IRGO➣International Research Group on Ostracoda |
| IRGO➣Institut de Recherche en Gestion des Organisations (French: Research Institute of Organizational Management; Montesquieu University) |
| IRGO➣Internet Research Group of Otago (New Zealand) |
| IRGO➣Isocentric Reciprocal Gait Orthosis |
| IRGO➣Improv Repository of Goings (improvisation resource; Washington, DC) |
| IRGO➣Interministerial Retiree Group of Ottawa (Canada; est. 2007) |
| IRGO➣International Responsible Gaming Organization |