| Acronym | Definition |
|---|
| IOT | In Order To |
| IOT | Internet of Things |
| IOT | Index-Organized Table |
| IOT | Interoperability Testing |
| IOT | British Indian Ocean Territory (ISO 3-letter country code) |
| IOT | Initial Operational Test |
| IOT | Institute for Ocean Technology (Canada) |
| IOT | Inductive Output Tube |
| IOT | In-Orbit Test |
| IOT | Illuminates of Thanateros |
| IOT | Inter-Operator Tariff (GSM Roaming) |
| IOT | Independent Operational Test |
| IOT | Initial Officer Training (UK Royal Air Force) |
| IOT | Intensive Outpatient Treatment |
| IOT | Instrument Operations Team |
| IOT | Ingeniørhøjskolen Odense Teknikum (Danish: Odense University College of Engineering) |
| IOT | Iothalamate (radiopaque agent) |
| IOT | Image Output Terminal |
| IOT | International Office Technologies (Eagan, MN) |
| IOT | Institut für Organisations- und Technikgestaltung GmbH (German: Institute for organisational and technological design; Gelsenkrichen, Germany) |
| IOT | Interoffice Trunk |
| IOT | Intraocular Tension |
| IOT | I Only Thought |
| IOT | Input/Output Test |
| IOT | Inter-Organizational Transfer |
| IOT | Interoperability Training |
| IOT | Institut für Oberflächentechnik der Hochschule Zittau/Görlitz (German: Institute for Surface Engineering at the University of Applied Science Zittau/Goerlitz) |
| IOT | Injectable Opioid Treatment (drug treatment) |
| IOT | Information Operations Technology |
| IOT | In-Out-Through (MIDI computer protocol) |
| IOT | Investors of Tomorrow |
| IOT | Integrated Operator Trainer |
| IOT | Issue Organizing Teams (Progressive Democrats of America) |
| IOT | Interoffice Transfer |
| IOT | Integrated Office Technology Plc (UK) |
| IOT | Intensive Outreach Team |
| IOT | Indian Oiltanking Limited (Mumbai, India) |
| IOT | Immature Ovarian Teratoma |
| IOT | Integrated Order Taker |
| IOT | Intubacion Oro Traqueal (Spanish: Oral-Tracheal Intubation) |
| IOT | Institute of Transportation (Taiwan) |