| Abbreviation | Definition |
|---|---|
| UEI | Unlimited Events Inc |
| UEK | Underwater Electric Kite |
| UEK | Union Eissport Klub Innsbruck |
| UEM | United Engineers Malaysia, Bhd |
| UEM | United Entertainment Media |
| UEM | Utility Equipment Management Group |
| UEN | Used Equipment Network |
| UEP | Underwoods Engineered Products |
| UESAC | Universal Service Administrative Corporation |
| UESC | United Energy Services Corporation |
| UESI | Underwater Engineering Services Inc |
| UET | United Equipment Technologies |
| UET | Universal Environmental Technologies, Inc. |
| UET | University Educational Travel |
| UETI | Universal Technologies, Inc. |
| UETL | Universal Embedded Technologies Ltd |
| UETU | Ocean Network Express Holdings Ltd |
| UEV | Universal Electric Vehicle Corporation |
| UEW | Usha Engineering Works |
| UEX | Ultimate EXpress |