LIOS
| Acronym | Definition |
|---|---|
| LIOS | Leadership Institute of Seattle (Seattle, WA) |
| LIOS | Linz Institute for Organic Solar Cells (Johannes Kepler University; Linz, Austria) |
| LIOS | Linear Optical Sensors |
| LIOS | Local Input/Output Subsystem/Subunit |
| LIOS | Long Island Orchid Society (est. 1953; Long Island, NY) |
| LIOS | Lawful Interception Operating System (Siemens IT Solutions) |