English abbreviations from tsi to tso
- TSI (Temporarily Shut In)
- TSID (Target System Interface Drawing)
- TSIP (Task Force XXI System Integration Plan)
- TSK (Task)
- TSL (Transportation Security Laboratory)
- TSM (Taos Regional Airport (FAA: SKX))
- TSM-ABCS (TRADOC Systems Manager - Army Battle Command Systems)
- TSMO (Threat Simulation Management Office)
- tsn (Tswana language (ISO 639-2 code))
- tso (Tsonga language (ISO 639-2 code))