Abstract: A tape dispenser includes a body, a cutter base formed vertically and integral with a front portion of the bottom plate, and a tape retainer. The bottom plate has its rear portion on which a vertical post is provided integral with the bottom plate, having a free upper end. The tape retainer has a vertical semi-circular wall and a cylinder formed on an inner surface of the vertical semi-circular wall to fit around the post on the bottom plate so that the tape retainer may be rotated with the post functioning as a pivot for a certain distance back and forth. Then the tape retainer can be rotated to let the tape dispenser become a small dimensions so as to be placed in a center hollow of an adhesive tape for putting away.