| Acronym | Definition |
|---|
| IFU | Instructions for Use |
| IFU | Institut für Unternehmensführung (German: Institute for Corporate Governance) |
| IFU | Investeringsfonden for Udviklingslande (Danish: Investment Fund for Developing Countries) |
| IFU | Integral Field Unit |
| IFU | Indications for Use |
| IFU | Industrialiseringsfonden for Udviklingslandene (Danish: Industrialisation Fund for Development Countries; Copenhagen, Denmark) |
| IFU | Interface Unit |
| IFU | International Federation of Fruit Juice Producers |
| IFU | Imprimé Fiscal Unique (France: Combined Fiscal Summary) |
| IFU | Infectious Units |
| IFU | Inclusion Forming Unit (infectious microorganism measurement) |
| IFU | Implementation Follow Up (World Bank) |
| IFU | Information For Use |
| IFU | I Fouled Up (polite form) |
| IFU | Intelligence Field Unit |
| IFU | Ionic Fuel Technology, Inc. (former stock symbol) |
| IFU | Internal Framing Unit |