Abstract: A rooftop perimeter safety system is a barrier system that may include a plurality of supports configured to be secured to a roof top. Each support may include one or more brackets secured to an upright member. The bracket includes at least one cable retainer configured to support a cable therein to form a cable barrier and at least one rail retainer configured to support a rail therein to form a rail barrier. The rooftop perimeter safety system may include at least one cable to form the cable barrier, at least one rail to form the rail barrier, or both the at least one cable and the at least one rail, depending on the application.