| Abbreviation | Definition |
|---|---|
| UOC | United Orthopedic Corporation |
| UOCC | Union Oil Company of California |
| UOE | Uniroyal Opto- Electronics |
| UOE | Upstate Office Equipment, Inc. |
| UOG | UAE Offset Group |
| UOI | Uncharted Outposts International |
| UOI | Universal Odyssey, Inc. |
| UOI | Unlimited Opportunities Inc |
| UOL | Universo On- Line |
| UOL | Uranium OnLine -The Nuclear Fuel eCommerce Solution |
| UOP | Universal Oil Products |
| UOQ | Unit of Quantity |
| UOT | University of Toyota |
| UOT | University Of Trading Financial Services |
| UOTPE | University of Toyota Product Education |
| UOV | Upper Ohio Valley Net, Inc. |
| UOVN | Upper Ohio Valley Net, Inc. |
| UP | Universal Pictures |
| UP | University Press |
| UPB | University Press Books |