A truck bed riser providing additional hauling capacity having a front riser member, a first side riser member, a second side riser member and a tailgate riser member. The riser members are adapted to connect to each other and to be held to the truck bed, preferably by clamp members. The truck bed riser may include a cover which is attached to the top portion of the four riser members and held in place by suitable means such as clamps or velcro. Preferably, the truck bed riser is made of aluminum.