Abstract: A trunk retainer assembly for an automobile that provides a structure for holding the trunk lid securely when an oversized load has been placed into the automobile trunk compartment that necessitates the trunk lid being left in a partially open position. The trunk retainer assembly has an elongated strap and a buckle. The buckle has a strap attaching portion, an intermediate portion, and a mounting portion. The strap attaching portion has a pair of longitudinally spaced slots, one of these being a top slot and the other a bottom slot. These slots extend laterally with respect to the longitudinal axis of the strap attaching portion whereby the strap may be threaded through the top slot and then direction reversed 180 degrees so that it can be threaded downwardly through the bottom slot. The mounting portion of the buckle has an aperture adjacent its upper end through which a threaded bolt passes for securing the buckle to the interior of the trunk lid.