| Trans-Person | transgender |
| Transferrin | transferrin |
| Transgression | transgression |
| Trans-Frau | trans woman |
| Transfektion | transfection |
| Transferase | transferase |
| Transklusion | transclusion |
| Transparent | banner |
| transparent | transparent |
| Transpluto | Planet X |
| transdermal | percutaneous |
| Transaktion | transaction |
| Transfer | hand-off |
| Transfusion | transfusion |
| Transgressiv | transgressive |
| Transition | transition |
| Translation | translation |
| Transmission | transmission |
| Transparenz | transparency |
| Transport | transport carriage |