| Acronym | Definition |
|---|
| IIU➣International Islamic University (Terengganu, Malaysia) |
| IIU➣International Investment Underwriting |
| IIU➣Israeli Internet Underground |
| IIU➣Internet Islamic University |
| IIU➣Inertial Instrument Unit (US Navy) |
| IIU➣Imagery Interpretation Unit (USMC) |