- ZAT stands for Zorg Advies Teams (Dutch: Care Advisory Team; Utrecht, Netherlands)
- ZAT stands for Zone Affectée Thermiquement (French: Heat Effected Zone)
- ZAT stands for Zariba of All Territory (anime)
- ZAT stands for Zone Advancement Tournament (tennis)
- ZAT stands for Zona Aerea Territoriale (Italian: Area Air Place; Italian Air Force)
- ZAT stands for Zone Air Temperature
- ZAT stands for Zinc Atmospheric Tracer
- ZAT stands for Zope Advanced Training (Zope Corporation)
ZAT