| Abbreviation | Definition |
|---|---|
| IET | Information Engineering Technology |
| IET | Interactive Employee Training |
| IETB | Information and Entertainment Transaction Billing |
| IETR | Initial Evaluation contains the Team Report |
| IF | Impact Factor |
| IF | Industrial Flat |
| IF | Internal Focusing |
| IF | Internally Focused |
| IF | Inventing The Future |
| IFAM | Institute for Financial and Actuarial Mathematics |
| IFAN | Independent Financial Associates Network |
| IFAS | Integrated Financial and Administrative Solution |
| IFB | Invitation For Bid |
| IFB | Invitation For Bids |
| IFBE | Institute for Fair Business Ethics |
| IFC | Corporación Financiera Internacional |
| IFC | Industry Foundation Classes |
| IFC | International Finance Corporation |
| IFE | Integrated Financial Engineering |
| IFE | International Fair for Entrepreneurs |