| Abbreviation | Definition |
|---|---|
| UKF | U K Fantastic |
| UKF | Universal-Kugellager-Fabrik, GMBH |
| UKG | UKGraffiti |
| UKG | Undying King Games |
| UKG | Utrechts Klokkenluiders Gilde NL |
| UKI | U K Industry |
| UKOM | UK Online Measurement company |
| UKP.EB | United Kingdom Partners for Electronic Business |
| UKS | United Kenpo Systems |
| UKS | Updike, Kelly, & Spellacy, Connecticut Law Firm |
| UKT | U K Transplant |
| UKTA | United Kingdom Thermography Association |
| UKV | U K Valuation, Ltd. |
| UKW | U K- Wire, Limited |
| UKW | Urbach, Kahn, & Werlin, Advisors |
| UL | Underwriters Laboratories, Inc. |
| UL | Underwriters Laboratory/ies |
| UL | United Laboratories |
| ULA | United Launch Alliance |
| ULC | Ultimate Living Center |