Abstract: A collapsible pneumatically operated ambulance cot having a support frame, a wheeled base, a support mechanism disposed therebetween, and a lift mechanism for pneumatically moving the upper frame relative to the lower frame is disclosed. The lift mechanism permits a single attendant to raise the cot from a lowered position to a raised position, and an infinite number of positions therebetween, and to raise the wheeled base relative to the support frame to situate the cot onto an elevated surface such as the transport deck of an ambulance.