| Abbreviation | Definition |
|---|---|
| ISU | Information Services Unlimited |
| ISV | Independent Software Vendor |
| ISV | Internet Software Vendor |
| ISVM | Incremental Support Vector Machine |
| ISWL | India Steel Works Ltd |
| IT | Imagination Technology |
| ITAG | Industry Trends Analysis Group |
| ITAG | Information Technology Advisory Group |
| ITAG | Information Technology Application Group |
| ITAG | Information Technology Architecture Group |
| ITAG | Information Technology Association of Galway |
| ITBC | Interprovincial Truck Bodies Corp |
| ITC | Ideal Toy Corporation |
| ITC | Imagination Technology Corporation |
| ITC | Imperial Tobacco Company |
| ITC | Incorporated Television Company |
| ITC | Indian Tobacco Corporation |
| ITC | Industrial Tank Corporation |
| ITC | Industrial Tooling Corporation |
| ITC | Intercontinental Terminals Company |