- Technip
- Technogym
- Teijin Aramid
- Telecoms
- Telefonica
- Telia
- Teltonika
- Telus International
- TELUS International
- TELUS International AI
- TELUS International AI Data Solutions
- TELUS International AI Inc.
- TELUS International Europe
- Temenos
- Templafy
- Tencent
- Tenneco
- TenneT
- Teradata
- Terma
- Territory
- Tesla Motors
- Testbirds
- Testo SE
- Testq Technologies
- Tetra Pak
- Tetra Tech
- Tetrapak
- Teva Pharmaceuticals Europe
- Texas Instruments
- Textkernel
- Textron
- TGC World
- Thales Group
- Thalia Bücher
- The Adecco Group
- The BlackStone Group
- The Brand Union
- The Dow Chemical Company
- The European Central Bank
- The Hackathon Company
- The Hershey Company
- The Information Lab
- The Kraft Heinz Company
- The MathWorks AB
- the muller company