| Acronym | Definition |
|---|
| IOL | Intraocular Lens (artificial insert) |
| IOL | Institute of Linguists |
| IOL | Ireland On Line |
| IOL | InterOperability Laboratory (University of New Hampshire) |
| IOL | Inter-Organisational Learning |
| IOL | Ipmi over Lan |
| IOL | Inter Operability Laboratory |
| IOL | Information Overload |
| IOL | Interoperability Lab |
| IOL | Induction of Labor (childbirth) |
| IOL | Israel Online |
| IOL | Italia On Line |
| IOL | Ideas on Liberty (Foundation for Economic Education) |
| IOL | India Office Library |
| IOL | It's Only Love (Beatles song) |
| IOL | Inventory on Loan |
| IOL | Institute of Licensing (London, UK) |
| IOL | Instant On Lighting |
| IOL | Initial Outfitting List |
| IOL | Integrity Online (ISP) |
| IOL | Intermittent Operating Life (electronics) |
| IOL | Indian Oxygen Limited |
| IOL | Input Output Library |
| IOL | Insurance Ombudsman of Ireland |
| IOL | Installation Management Agency Online (US Army financial system) |
| IOL | Information Operations Laboratory |