| ISO | Imaging Spectrometic Observatory | - | Atmospheric Research Center |
| ISO | Infrared Space Observatory | - | Atmospheric Research Center |
| ISO | International Standards Organization | - | Atmospheric Research Center |
| ISO | IR Space Observatory | - | Computer Acronyms(common) |
| ISO | International Organization For Standardization | - | Computer Acronyms(common) |
| ISO | International Organization For Standardization | - | Computer and Internet |
| ISO | International Organization For Standardization | - | Human Genome |
| ISO | International Standardization Organizations | - | Organizations |
| ISO | International Organization For Standardization | - | Satellite Meterology |
| ISO | In Search Of | - | ISO Country Codes |
| ISO | In Search Of -International Organization For Standardization (from The Greek ?†?? | - | Astronomy |
| ISO | International Standards Organization | - | Business and Finance |
