Etron

Etron or e-tron may refer to:


 * étron, see List of French words of Germanic origin (C-G)
 * Audi e-tron (brand), "e-tron", a sub-brand of Audi automobiles for all-electric cars
 * Audi e-tron (concept car), a series of electric concept cars from Audi
 * Audi e-tron (2018), a battery-electric SUV introduced by Audi in 2018
 * eTron 3T, a disposable e-cigarette