Abstract: A cargo stabilizer is provided for utility vehicles, such as vans, pickup trucks, and the like, which have a cargo carrying bed. The stabilizer prevents the cargo from shifting either fore-to-aft or laterally in the vehicle bed. The stabilizer comprises two guide rails attached lengthwise along the opposite sidewalls of the vehicle bed in a generally mutually parallel relationship. A crossbar is slidingly supported on the guide rails, and includes latches at the opposite ends of the crossbar to adjustably and positively connect the crossbar to the guide rails at a selected location. The crossbar is longitudinally adjustable between locked and unlocked positions, and includes abutment surfaces at its opposite ends which directly abut the sidewalls of the vehicle bed when the crossbar is in the locked position.