Abstract: A door stopper that is mounted directly to a door knob or a door handle of a door is disclosed. The door stopper is preferably made as a single piece from an elastomeric material so that it can easily slip over and substantially conform to the shape of various types of door knobs and door handles. The door stopper comprises a sleeve that fits over the door knob and a cushion extending outwardly from the door knob to cushion the impact of the door knob against a wall or other surface. Alternatively, a pair of inwardly tapered fingers may be used instead of a sleeve to secure the door stopper to a door handle.