| Acronym | Sense | Language | Topics |
|---|---|---|---|
| TSO | Time Since Overhaul | In English | |
| TSO | Time-Sharing Operations | In English | |
| TSO | Time-Sharing Option | In English | |
| TSO | Technisch Secundair Onderwijs | In Dutch | → Education → Engineering, technology |
| TSO | Time Sharing Option | In English | → Software |