A locking line tag is provided that includes an elongated sheet of material having a top, bottom, and opposing lateral sides between the top and bottom, the sheet further having a plurality of scored lines therein that when folded form a tubular structure with a panel at each of the top and bottom ends that interlock with each other and at least a pair of intermediate sections, each of the intermediate sections having a key slot therein that open to opposing lateral sides of the locking tag.
