| Acronym | Definition |
|---|
| CTZ | Coatzacoalcos (México) |
| CTZ | Citizenship |
| CTZ | Corps Tactical Zone |
| CTZ | College Toezicht Zorgverzekeringen (Dutch: College Health Insurance Supervision; Netherlands) |
| CTZ | Coastal Transition Zone |
| CTZ | Control Zone |
| CTZ | Central Time Zone |
| CTZ | Columbus, Tomahawk, Zeus (beer hops) |
| CTZ | Chemoreceptive Trigger Zone (part of the brain responsible for nausea) |
| CTZ | Certificato del Tesoro Zero Coupon (Italian: Zero Coupon Treasury Certificate) |
| CTZ | Consorcio de Transportes de Zaragoza (Spanish: Zaragoza Tranport Consortium; Zaragoza, Spain) |
| CTZ | Critical-Time Zone |