| Acronym | Definition |
|---|
| IUP | Indiana University of Pennsylvania |
| IUP | Illegal Use of Portal |
| IUP | Intended Use Plan |
| IUP | Indiana University Press (Bloomington, IN) |
| IUP | Intrauterine Pregnancy |
| IUP | Intrauterine Pressure |
| IUP | Individual User Profile (various meanings) |
| IUP | Institut Universitaire Professionalisé (French: University Institute of Professional Education) |
| IUP | Interconnect User Part |
| IUP | Interim Update Package |
| IUP | Installed User Program |
| IUP | Internet Utility Provider (a type of Highly Engineered Solution) |
| IUP | Intraureteral Pressure (biology) |
| IUP | Intervascular Ultrasound Program |