Abstract: A cargo retainer is disclosed for vehicles having a cargo bin which may include a cargo bed, sidewalls, stanchions and roof structure. The retainer is designed to be used as a pair of retainers which are mounted on opposing sidewalls or between the cargo bed and a suitable roof structure. A beam is securely positioned between the pair of retainers and abuts the cargo preventing undesired movement thereof. The length of the beam is sized in relation to the thickness of the retainers and the spacing between the sidewalls or other suitable structures to provide a tight fit between the sidewalls and the beam and retainers. The retainer includes a rigid box open on two sides which is mounted on a rigid block. The wedge is connected to the block. The wedge has a moveable portion which allows the beam end to be pushed over the wedge surface and into the box after which a wedge portion closes off one side of the box to hold an end portion of the beam in the box.