A roof mounted ladder safety bracket comprises a first plate, a second plate, a third plate, a first hinge and a second hinge. The first plate and the second plate are rotably coupled via the first hinge and the second plate and the third plate are rotably coupled via the second hinge. The first plate further comprises a plurality of arms extending therefrom, each of the plurality of arms comprises thereon at a distal end, a hook having an open end facing outward in a first direction and the open end of the hook is configured to be temporarily attached to a leg of a ladder. The third plate further comprises at least one opening configured to enable the ladder safety bracket to be temporarily coupled to a roof structure. The roof mounted ladder safety bracket secures to the ladder via the open end of the hook by using a locking mechanism and secures to the roof structure via the at least opening by nailing a nail through a portion of the at least one opening.