GHZ or GHz may refer to:
- Chabab Ghazieh SC, a Lebanese association football club
- Gigahertz (GHz), unit of frequency
- Greenberger–Horne–Zeilinger state, a specific entangled quantum state of three or more particles
- GHZ experiment, an experiment associated with such a state
- Galactic Habitable Zone, the region of a galaxy that is favorable to the formation of life
- Green Hill Zone, the first level in Sonic the Hedgehog
This disambiguation page lists articles associated with the title GHZ.
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