 | U.S. Savings Stamp |
| U-Chart |
| Unbiased Statistic |
| Uncoded |
| Uncommitted read |
| Undeliverable as Addressed (UAA) |
| Undeliverables |
| Undo |
| Unexplained Variation (S) |
| Unicode |
| Unicode Consortium |
| Unicode Standard |
| Unidirectional Interpretation |
| Unified Modeling Language (UML) |
| Uniform Resource Locator (URL) |
| Unintended Consequences |
| Unique Clicks |
| Unique Identifier (UID) |
| Uniqueness |
| Unique Records |
| Unique Reference Number (URN) |
| Unique Visitors |
| Unique ZIP Code |
| Unit |
| United Parcel Service (UPS) |
| United States' Business Universe |
| United States Code (USC) |
| United States Postal Service (USPS) |
| Unit of Recovery |
| Unit of Sale |
| Unit of work |
| Unit of Work Consolidation |
| Unit Reserve Stock |
| Unit Sampling |
| Unit Testing |
| Univariate |
| Universal Description, Discovery and Integration (UDDI) |
| Universal Postal Union (UPU) |
| Universal Spanish |
| Universal Suppression Service (USS) |
| Universal Transverse Mercator (UTM) Co-ordinate System |
| Universe |
| UNIX |
| Unplanned Downtime |
| Unprotected |
| Unsafe Query |
| Unstructured Data |
| Untied Dispatch |
| Unzipped |
| Update |
| Update Date |
| Update Frequency |
| Updates |
| Updating |
| Upgradable Mail |
| Upper (or Lower) Case |
| Upper Control Limit (UCL) |
| Upper Specification Limit (USL) |
| Upscale List |
| Up-sell |
| Upsert |
| Upside Down |
| Usability |
| Usage |
| Usage History |
| USB Token |
| USD |
| Useability |
| Use Case / Use Case Scenario |
| Usefulness |
| User |
| User Acceptance Testing |
| User domain |
| User-Friendly |
| User-Generated Content |
| User Interface |
| User Life-Cycle Management |
| User Portability |
| User Preferences |
| User Profile |
| User Review |
| User-Translated Content |
| USPS Address |
| USPS Box |
| USPS Box Group ID |
| USPS Box Group Type |
| USPS Box ID |
| USPS Box Type |
| USPS General Delivery Point |
| USPS Route |
| Utilities |
| Utility |
| Utility Carrier |
