| Top Shop / Top Man (Holdings) Limited group |
| Top Skills Centre |
| Topgolf Callaway Brands Corp |
| Total Security (Société Total Sécurity) |
| TotalEnergies SE |
| TotsBots Ltd |
| Touchstone FMS Ltd |
| Touchstone Group |
| Toyota Motor Corp |
| Traditional Dance Forum Scotland |
| Traidcraft Foundation |
| Traidcraft PLC |
| Transform Trade (formerly Traidcraft Exchange) |
| Transformedia Culture C.I.C |
| Travel Center Tunisia |
| Travis Perkins plc |
| Trek Bicycle Corporation |
| Triangle Arts Trust [ALSO: Triangle Network] |
| Triangle Wholefoods Collective Ltd (t/a Suma Wholefoods) |
| Trigger Productions Ltd |
| Trigger Stuff C.I.C. |
| Trina Solar Co., Ltd |
| Trinity College London |
| Triodos Bank NV |
| Triodos Bank UK Limited |