| ID | Name | Type |
|---|---|---|
| #14883 | Tyrell Computers | Z |
| #14799 | Třeboň Compani | Z |
| #19707 | Tři delfínci | P |
| #14884 | U-Microcomputers Ltd | Z |
| #14885 | U-man | ? |
| #22812 | U. Kleinekathoefer | + |
| #14886 | U.L.G. | ? |
| #14887 | U.Ph. | ? |
| #17843 | U.S. Gold Club | U |
| #14899 | U.S. Gold Ltd | P |
| #14900 | U.S. Gold [France] S.A.R.L. | Z |
| #14888 | U.S.W. | ? |
| #14889 | U.T.S. (Ulrich Technical Services) | Z |
| #14890 | U.W. Geitner | ? |
| #14891 | U99 | ? |
| #22567 | UBMK | P |
| #14892 | UCM Group | Z |
| #22308 | UDG Games | Z |
| #14893 | UFO Group | Z |
| #17841 | UK Home Computers | H |