| 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 |