Abstract: A device for tying an elastic balloon is disclosed. The nonmovable device defines a hole through which the neck of the balloon may be passed to form the knot in the neck. An opening at the edge of this hole facilitates removal once the knot has been formed. The device utilizes tabs and orthogonal retaining and restraining elements to simplify its utilization by either left- or right-handed people. No separate member remains with the balloon once the sealing through means of forming a knot has been affected. In addition, no parts of the device move and thus it greatly facilitates inexpensive and simple utilization in a repetitive fashion. Through the disclosure of several different embodiments, variations of the basic design are disclosed to enhance the possibility of inexpensive manufacture.