| Acronym | Definition |
|---|
| UPL | United Phosphorus Ltd. (various locations) |
| UPL | Unauthorized Practice of Law |
| UPL | Ukraine Premier League (football) |
| UPL | Upper Payment Limit |
| UPL | Universal Parsing Language |
| UPL | Unapproved Parts List |
| UPL | Upload |
| UPL | User Perceived Latency |
| UPL | Upper Payment Limit (Medicaid) |
| UPL | Unión del Pueblo Leonés (Spain) |
| UPL | Unlicensed Practice of Law |
| UPL | Unpaid Leave |
| UPL | Utica Public Library (Utica, NY) |
| UPL | Unit Prevention Leader |
| UPL | Unit Price List |
| UPL | Unsecured Personal Loan |
| UPL | University Press Limited |
| UPL | User Program Language |
| UPL | Unfunded Priority List |
| UPL | Union Populaire Locale (Wallis and Futuna) |
| UPL | Upala, Costa Rica (Airport code) |
| UPL | Uniontown Public Library (Pennsylvania) |
| UPL | Utah Power and Light |
| UPL | Urbandale Public Library (Iowa) |
| UPL | Using Profane Language (Quaker religion) |
| UPL | United Powers League (Star Craft) |
| UPL | Upper Prediction Limit |
| UPL | Universal Probe Library |
| UPL | University of Pennsylvania Library (Philadelphia, PA) |
| UPL | Un-equal Packet Loss |
| UPL | Upper Profits Limit |
| UPL | Undergraduate Projects Lab (UW-Madison Computer Science Department) |
| UPL | Utility Partnership Ltd. (UK) |
| UPL | Universal Programming Language |
| UPL | Unsecured Proxies List |
| UPL | Universal Program License (Ukraine) |
| UPL | Uncovered Portion of the Lunate |
| UPL | Unacceptable Pollutant Level |
| UPL | Uniform Person Locator |
| UPL | Unscheduled Personal Leave (also seen as UPERL) |