| Acronym | Definition |
|---|
| IDU➣Iraqi Democratic Union |
| IDU➣I Don't Understand |
| IDU➣Indoor Unit (wireless) |
| IDU➣Injecting Drug User (medical/health) |
| IDU➣Intravenous Drug Use |
| IDU➣Intelligent Data Understanding |
| IDU➣Interface Demonstration Unit |
| IDU➣Incremental Device Update |
| IDU➣Indoor Unit |
| IDU➣Instituto de Desarrollo Urbano (Colombia) |
| IDU➣International Democrat Union |
| IDU➣Interface Data Unit |
| IDU➣Idoxuridine |
| IDU➣Interdisciplinary Unit |
| IDU➣Initial Daily Use (FAA) |
| IDU➣Interactive Display Unit |
| IDU➣Identity of Ultimate Recipient (FIPS) |
| IDU➣Input and Display Unit |
| IDU➣Initial Distribution Update |
| IDU➣Intel Developer Update |
| IDU➣Internal Development Unit (systems and software) |
| IDU➣Internal Defence Unit (Sierra Leone) |
| IDU➣Insert, Delete and Update |
| IDU➣Irritation During Urination (band; UK) |