The vehicle AC generator includes a frame including an end wall section and a peripheral wall section, a stator core, a stator coil having rear and front coil ends projecting axially rearward and frontward respectively from the stator core, a rotor supported by the frame, and a cooling fan having centrifugal blades and fixed to the rotor. The peripheral wall section has a cooling air discharge opening adjoining the end wall section. The end wall section has a centrifugal-blade-facing portion axially facing the centrifugal blades, and a coil-end-facing portion axially facing the rear coil end. The coil-end-facing portion is bent at a predetermined curvature radius and extending from the centrifugal-blade-facing portion to the cooling air discharge opening. The inner end surface of the coil-end-facing portion is formed with a recess located axially rearwardly of a radial extension line of an inner end surface of the centrifugal-blade-facing portion.