- ZGS stands for Zero Gradient Synchrotron
- ZGS stands for Zirconia Grain Stabilized (platinum)
- ZGS stands for Zero Gravity Simulator
- ZGS stands for Zimbabwe Geological Survey (est. 1910; Ministry of Mines, Environment and Tourism)
- ZGS stands for Zero Gravity Shower
- ZGS stands for Zeouf Ghost Stunters (motorcycle stunt team)
ZGS