CTZ

CTZ may refer to:


 * Chemoreceptor trigger zone in neuroscience
 * CTZ is the ICAO airline designator for CATA Línea Aérea, Argentina
 * CTZ is the IATA airport code for Sampson County Airport, United States
 * CTZ is the United States Federal Aviation Administration location identifier for Sampson County Airport
 * Chelyabinsk Tractor Plant, Russia
 * Cyclothiazide, a positive allosteric modulator of the AMPA receptor
 * Ciliary transition zone, a portion of the motility structure known as cilium present in eukaryotic cells.
 * Central Time Zone
 * Count trailing zeros, a computer programming bit operation