| Index | U0 | UA | UB | UC | UD | UE | UF | UG | UH | UI | UJ | UK | UL | UM | UN | UO | UP | UQ | UR | US | UT | UU | UV | UW | UX | UY | UZ | Home |
| Company | Country | Branch |
| Uoki | Japan | Food |
| Update.com | Austria | Software |
| Upgrade International | USA | Computer |
| UPM-Kymmene OYJ | Finland | Paper |
| Uproar Inc. | USA | Internet |
| Uralita | Spain | Construction Materials |
| Uralmash | Russia | Engineering |
| Urban Outfitters, Inc. | USA | |
| UroCor, Inc. | USA | |
| Urologix, Inc. | USA | |
| UroMed Corporation | USA | |
| Ursus Telecom Corporation | USA | Telecommunication |
| US LEC Corp. | USA | |
| US Oncology, Inc. | USA | Medicine |
| US Search.com Inc. | USA | |
| US WATS, INC. | USA | |
| USA Biomass Corporation | USA | |
| USA Education | USA | Finance |
| USA Interactive | USA | Telecommunication |
| USA Truck, Inc. | USA | |
| USA Video Interactive | USA | Media |
| USABancShares.com, Inc. | USA | Bank |
| USANA, Inc. | USA | |
| Usen | Japan | Telecommunication |
| USFreightways Corporation | USA | |
| Usinor | France | Steel |
| USinternetworking, Inc. | USA | |
| Üstra Hannoversche Verkehrsbetriebe | Germany | Transport |
| USU Openshop | Germany | IT Service |
| USURF America, Inc. | USA | |
| USX-US Steel | USA | Steel |
| UTI | USA | |
| Utilicorp United | USA | |
| UTILX Corporation | USA | |
| Utimaco | Germany | Internet |
| UTStarcom, Inc. | USA | |
| Uzin Utz | Germany | Construction Materials |
| Index | U0 | UA | UB | UC | UD | UE | UF | UG | UH | UI | UJ | UK | UL | UM | UN | UO | UP | UQ | UR | US | UT | UU | UV | UW | UX | UY | UZ | Home |