Abstract: A patient supporting and transporting backboard assembly formed from two cooperating, substantially rigid, lightweight panels which are corrosive, splinter, rot and stain resistant, can be sterilized for use in hospital environments, and allow patient x-rays without transferring the patient to another support. The panels are preferably formed from resinous plastic material such as polycarbonate and include integral, stabilizing ribs or channels and a peripheral edge structure providing a carrying handhold. Tie-down straps having resilient clips received on the edge structure can be positioned as desired along the length of the backboard. Supplemental carrying handles and head restraint assemblies for immobilizing a patient's head and/or applying cervical traction are also provided for attachment to the backboard.