Abstract: A tailgate extender allows a pickup truck bed to be compartmentalized whenever the tailgate of the pickup truck is in the lowered position. A first extension member has a pair of hingedly attached panel members such that one of the panels is hingedly attached to a side of the bed. A second extension member has another pair of hingedly attached panel members hingedly attached to the opposing side of the pickup truck bed. In the extended position, the two extension members unfold and abut one another over the tailgate and are secured to each other in order to form a walled pickup truck bed. The two extension members may also be opened in an inverted position.