A door jamb reinforcing system comprising a first reinforcing member, wherein the first reinforcing member comprises a plurality of first screw receiving openings for receiving mounting screws, a latch bolt receiving aperture, and at least one deadbolt latch bolt receiving aperture; a strike plate; and a second reinforcing member, wherein the second reinforcing member has a substantially L-shaped cross section and comprises a plurality of corresponding second screw receiving openings for receiving mounting screws, a strike plate receiving aperture, and at least one deadbolt latch bolt receiving aperture, wherein the deadbolt latch bolt receiving aperture is formed to correspond to the deadbolt latch bolt receiving aperture; wherein when the first reinforcing member and the second reinforcing member are attachable to a door frame in overlying contacting abutting relation with each other and with the door jamb with mounting screws.