Abstract: A head restraint system for use with a backboard includes a stretchable base pad which defines a rectangular envelope for fitting tightly over one end of the backboard and a pair of head blocks which are adapted to engage a patient's head. The base pad is positioned on the backboard and under a patient's head and the pair of head blocks positioned thereon with one on each side of the patient's head. A base portion of each of the blocks includes hook material for attachment to a top surface of the base pad. The base pad also includes at least one ring-like element on one edge thereof and straps are provided for passing through the ring-like element to press and hold the head blocks downwardly against the upper surface of the base pad and inwardly against the patient's head.