| Acronym | Sense | Language | Topics |
|---|---|---|---|
| TT | Tiroler Tageszeitung | In German | → Newspapers, journalism |
| TT | TEJO-Tutmonde | In Esperanto | → Serial publications, periodicals |
| TT | Terminal Timing | In English | → Quality management |
| TT | Thrust Termination | In English | → Vehicle engineering |