ESZ
The abbreviation ESZ stands for:
- Electric tram Zurich , former tram in Zurich
- Electric trams in the canton of Zug, Switzerland, as the legal forerunner of Zugerland Verkehrsbetriebe AG
- Ernst Schröder Center for Conceptual Knowledge Processing eV
- España Zaragoza, the Spanish province of Saragossa according to ISO 3166-2 (also ES-Z )