A stopper grip ring for plumbing pipes. A stopper grip ring for plumbing pipes, according to an exemplary embodiment of the present disclosure, includes: an outer circumferential portion which forms an outer diameter of a ring shape; an O-ring supporting portion formed to be bent at one side of the outer circumferential portion so as to come into contact with an O-ring and having an entry inducing portion which is formed to be inclined at one end portion, and an inserting portion which is formed at the other end portion and enters while being induced by the entry inducing portion; and a stopper portion formed to be bent at the other side of the outer circumferential portion so as to be spaced apart from the O-ring supporting portion and having a sharpened portion which is formed at an edge and is divided by a plurality of slits.