| Acronym | Sense | Language | Topics |
|---|---|---|---|
| TR | Technical Report | In English | |
| TR | Tape Recorder | In English | |
| TR | Transportation Request | In English | → Transport and postal services |
| TR | Teal Ruby | In English | |
| TR | Test Request | In English | |
| TR | Thrust Reverser | In English | |
| TR | Time to Retrofire | In English | → Astronautics |
| TR | Tool Request | In English | |
| TR | Transistor/Receiver | In English | → Telecommunications |
| TR | Transmitter/Receiver | In English | → Telecommunications |