Abstract: A truck bed divider for use with a truck bed including a bottom floor and a pair of opposed side walls extending upwardly from the bottom floor, the divider including a panel having a top rail, a bottom rail, and a pair of opposed side rails joining the top rail and the bottom rail, at least one first adjustable securing member attached to the panel and engageable with the side wall of the truck bed, and an adjustable vertical extension secured to the bottom rail and engageable with the bottom floor of the truck bed.