| Abbreviation | Definition |
|---|---|
| UIBC | Unlawful Issuance of Bank Checks |
| UIC | Union of Islamic Courts |
| UJC | Urban Justice Center |
| UJE | Utah Judgment Enforcement |
| UJF | Unsatisfied Judgment Fund |
| UL | Unwritten Law |
| UL | Used List |
| UL | Utterly Legal |
| ULA | Uniform Laws Annotated |
| ULG | United Loan Gunmen |
| ULG | Usher Law Group |
| ULP | Unfair Labor Practices |
| ULPA | Uniform Limited Partnership Act |
| ULT-4 | Electronic Four Shot Identification Camera |
| ULW | Utah Legislative Watch |
| UMV | Unidentified Male Voice |
| UN | Unknown Nationality |
| UN | Unrepentant Nuisances |
| UNC | Uncooperative |
| UNCLE | United Nations Council For Law Enforcement |