Cable retainers for cables are disclosed. The cable retainers may include a panel having a pair of loop locks. The loop locks may engage each other to form a loop. The cable retainer may include a first and a second retention loop. Each retention loop may have a finger with a slot formed at a fold line of the finger. Each retention loop may also have a flap with a tab formed at a fold line of the flap. The finger and the flap of the first retention loop may be located directly across the panel from one another. The finger of the second retention loop may be located at a first end of the panel while the flap of the second retention loop may be located at a second end of the panel. The tabs and slots of each retention loop may interlock to form a rectangular cable passage. The cable may also include a reinforcement structure disposed in a retention loop. The reinforcement structure may be stepped reinforcement structure. The cable retainer may be formed entirely of paper and may be formed without and adhesive.