Zehnder is a German-language surname, mostly Swiss in origin:
Zehnder (surname)
It may also refer to the following:
Conley–Zehnder theorem, a mathematical theorem named after Charles C. Conley and Eduard Zehnder Mach–Zehnder interferometer, a device used in physics Egon Zehnder, a global executive search firm based in Switzerland Zehnder Confair, American politician Zehnder's, a large restaurant in Frankenmuth, Michigan W.M. 'Tiny' Zehnder Field, an American airport