A truck bed divider apparatus includes a first side frame member, a second side frame member, and side-frame-to-side-frame spacing means connected between the first side frame member and the second side frame member. A pair of partition gates are hingedly connected between the first side frame member and the second side frame member. The partition gates prevent items carried on the truck bed from moving toward the front of the truck bed away from the tailgate. With one embodiment, the respective side frame members are fastened to walls of the truck bed, and respective partition gate are nested within the respective side frame members when the partition gates are not in use. The apparatus of the invention permits positioning of items carried on the truck bed near the end of the bed, near the tailgate, so that the items are easier to reach from the tailgate end of the bed.