A fuel cell electric vehicle that can secure a sufficient stroke of a rocked driving wheel, lowering the center of the gravity of the vehicle. A fuel cell is provided for generating electric power by reacting hydrogen and oxygen with a hydrogen cylinder for supplying gaseous hydrogen to the fuel cell and a motor for generating motive power supplied to a rear wheel which is a driving wheel based upon electric power generated by the fuel cell. The hydrogen cylinder is arranged above the rear wheel so that its longitudinal direction is along a longitudinal direction of the vehicle with an axis in the longitudinal direction of the hydrogen cylinder being located off a center line in a direction of the width of the rear wheel.