| UP906003 | Developer | |
| UPL | DeveloperPublisher | |
| UPL Co. | Developer | |
| UPL JP | Publisher | |
| UPlay Online | DeveloperPublisher | |
| UQAC2 | Developer | |
| US Billiards | Publisher | |
| US Gold | Publisher | |
| USC Games | Publisher | |
| USC Interactive Media Division | DeveloperPublisher | |
| USPGameDev | Developer | |
| USW Games | Developer | |
| UStriteTeam | Developer | |
| UTV Ignition Entertainment | DeveloperPublisher | |
| UTV Ignition Games | Publisher | |
| UU Soft | Developer | |
| UVST | Developer | |
| U_Games_Studio | Developer | |
| Uacari | Developer | |
| Uani Studio | DeveloperPublisher | |
| Ubarefeet | Developer | |
| Uber Entertainment | Developer | |
| UberPie | Developer | |
| UberWiggett | Developer | |
| Ubi Pictures | Developer | |
| Ubi Soft | DeveloperPublisher | |
| Ubi Soft (WW) | Publisher | |
| Ubi Soft Casablanca | Developer | |
| Ubi Soft EU | Publisher | |
| Ubi Soft Milan | Developer | |
| Ubi Soft Montpellier | Developer | |
| Ubi Soft Montreal | Developer | |
| Ubi Soft NA/EU | Publisher | |
| Ubi Soft Paris | Developer | |
| Ubi Soft Romania | Developer | |
| Ubi SoftNA/PAL | Publisher | |
| Ubi SoftPAL | Publisher | |
| Ubi Studios UK | Developer | |
| UbiSoft | Publisher | |
| UbicompBro | Developer | |
| Ubihard | Developer | |
| Ubiquitous Entertainment | Publisher | |
| Ubiquitous Mayonnaise | Developer | |
| Ubisoft | DeveloperPublisher | |
| Ubisoft (EU) | Publisher | |
| Ubisoft (NA/EU) | Publisher | |
| Ubisoft (PAL) | Developer | |
| Ubisoft Annecy | Developer | |
| Ubisoft Barcelona | Developer | |
| Ubisoft Bucharest | Developer | |