An angle-resolved photoemission study for the Ag nanofilm grown on the pseudomorphic fee Fe(1 0 0) substrate has been carried out in order to investigate the detailed quantized electronic states. From the angle-resolved photoemission measurements, the dispersions of quantized electronic states in the present Ag nanofilms along the direction parallel to the nanofilm surface were directly determined. From these results, we discuss the electronic coupling of quantized electronic state in the Ag nanofilm with the electronic state of fee Fe(1 0 0) substrate.