(Bi‐Sr‐O)/(Ca‐Cu‐O) multilayered films were prepared by a plasma‐controlled sputtering method and annealed under various conditions to induce the superconductivity in the films. The annealing in the presence of PbO vapor at 860 °C was effective to convert the unleaded insulating multilayered films to superconductors with onset and zero‐resistivity temperatures of 113 and 103 K, respectively. Auger electron spectroscopy verified the incorporation of Pb in the films.