Abstract: A device for holding used dog waste bags includes first and second ends that are connected by an intermediate section of reduced thickness. The first end includes a bag retainer in the form of an enlarged projection, the projection including a pair of bisecting linear slots. The slots are immediately defined by a plurality of flexible triangular fingers that frictionally engage used dog waste bags that are partially inserted through the linear slots. The second end is in the form of an enlarged ring shaped to define a circular opening. By wrapping the intermediate section around a leash and fittingly inserting the projection through the opening, the device forms a closed loop in securement around the leash. With the device clipped to the leash, used dog waste bags can be removably secured to the bag retainer to enable a dog walker to transport the used bags in a hands-free manner.