| Acronym | Definition |
|---|
| IUS | Indiana University Southeast (New Albany, IN, USA) |
| IUS | Incisive Unified Simulator (software) |
| IUS | Inertial Upper Stage |
| IUS | International Ultrasonics Symposium (IEEE) |
| IUS | Internal Use Software (various organizations) |
| IUS | Interchange Unit Separator |
| IUS | International Union of Students |
| IUS | Intra-Uterine System (contraception) |
| IUS | Inter-University Seminar on Armed Forces and Society |
| IUS | Inline with Upstream Stable (Linux project) |
| IUS | Informix Universal Server |
| IUS | Interim Upper Stage (NASA) |
| IUS | International Union of Speleology |
| IUS | Intraoperative Ultrasound |
| IUS | Intermediate Upper Stage (US NASA) |
| IUS | Institute for Urban Studies (Canada) |
| IUS | Interwoven Universal Search |
| IUS | Interactive Unix Service |
| IUS | Image Understanding Services |
| IUS | Individual Unity Systemization |
| IUS | Integrated Utilities Services, Ltd. |
| IUS | Inter-Urban Structure |