LIO
| Acronym | Definition |
|---|---|
| LIO | London Improvisers Orchestra (UK) |
| LIO | Limon, Costa Rica (Airport code) |
| LIO | Local Infrastructure Organisation (UK) |
| LIO | Laser Indirect Ophthalmoscope |
| LIO | Legal Information Online |
| LIO | Lesser Included Offense |
| LIO | Leadership Interdiction Operations (various countries) |
| LIO | Local Intelligence Officers (England) |
| LIO | Low Input/Output (printers) |
| LIO | Low Intensity Operations |
| LIO | Lithium Organic (battery) |
| LIO | Load In/Out |
| LIO | Lock In/Lock Out |