ZT

ZT may refer to:
* Zoo Tycoon, a 2001 animal-simulation video game
* Zero Tolerance, a non-discretionary rules enforcement policy
* Zero Tolerance (game), a 1994 video game for Sega Genesis console
* zettatesla, an SI unit of magnetic flux density
* MG ZT an executive car made by MG Rover
* A dimensionless figure of merit for thermoelectric materials
* ZT (programming language)
* Zeitgeber Time, a standard method for measuring time in circadian rhythms
* ZT Online, a popular Chinese MMORPG.