This accelerator pedal device is provided with a pedal arm having an accelerator pedal, a housing that swingably supports the pedal arm, a slider that slides over the inner wall of the housing and that is pressed by the depressing of the accelerator pedal, a hysteresis-causing mechanism that includes a biasing spring for exerting biasing force through the slider so as to push back the pedal arm with and that causes hysteresis in the depressing force, and a return spring that exerts biasing force directly on the pedal arm in order to return the pedal arm to a rest position, the biasing spring and the return spring being disposed in the same area inside the housing.