| Acronym | Definition |
|---|
| CTSU➣Clinical Trial Service Unit |
| CTSU➣Cancer Trials Support Unit |
| CTSU➣Coordination and Technical Support Unit (fisheries and aquaculture reconstruction; Sri Lanka; UN Food and Agriculture Organization) |
| CTSU➣Counter Terrorism Support Unit (UK) |
| CTSU➣Community Traffic Services Unit (Los Angeles Police Department; Los Angeles, CA) |
| CTSU➣Contractor Traffic Simulation Unit (US FAA) |