Abstract: A surgical instrument holder, adapted to be received and retained by an operating room table clamping apparatus is disclosed. The inventive holder is particularly suited for adjustably mounting and stabilizing a laparoscope, endoscope or similar instrument which has an elongated shaft. The holder comprises a clamping assembly mounted at one end of the holder for holding the shaft of the instrument. The clamping assembly includes a pair of movable jaws adapted for being closed about the shaft of the instrument. Means carried by another end of the holder for cooperating with the operating room table clamping apparatus are provided.