Abstract: A gas tank-carrying trailer consisting of a wheeled U-shaped main frame with hitch means and a supporting dolly at its bight portion. The rear portion of the main frame carries an arched tank-lifting frame structure provided with winch means for lifting a tank above the level of the main frame. The arms of the main frame have spaced pairs of positioning lugs, and load bunks are provided with spaced right-angled plate-like vertical end portions supportable on the arms between the positioning lugs. The positioning lugs act to positively hold the bunks in transverse supporting positions when the tank is lowered onto the bunks. The tank is held down on the bunks by straps or chains whose ends are hooked to cross rods connecting the plate-like end portions of the bunks.