| IUP | Internet Utility Provider (a type of Highly Engineered Solution) | 互联网实用程序提供商（一种高度工程化的解决方案） |
| IUP | Intervascular Ultrasound Program | 血管内超声计划 |
| IUP | Intra-Uterine Pregnancy | 宫内妊娠 |
| IUP | Indiana University of Pennsylvania | 宾夕法尼亚印第安纳大学 |
| IUP | Institut Universitaire Professionnalis | 专业大学研究所 |
| IUP | Intrauterine Pregnancy | 宫内妊娠 |
| IUP | Internal User Profile | 内部用户配置文件 |
| IUP | Intrauterine Pressure | 宫内压 |
| IUP | I'm Usually Partying | 我通常去参加聚会 |
| IUP | Installed User Program | 已安装的用户程序 |
| IUP | Interconnect User Part | 互连用户部分 |
| IUP | Interim Update Package | 临时更新包 |
| IUP | Intended Use Plan | 预期使用计划 |
| IUP | Institut Universitaire ProfessionalisÉ (French: University Institute of Professional Education) | Institut Universitaire ProfessionalisÉ (French: University Institute of Professional Education) |