The present invention relates to a novel bacteriophage FCJ26 (KCCM11464P) and a composition comprising the bacteriophage FCJ26 (KCCM11464P) as an active ingredient. In addition the present invention relates to a method for preventing and/or treating an infectious disease due to Salmonella by using the bacteriophage FCJ26 (KCCM11464P) or the composition comprising same as an active ingredient.