Abstract: A truck bed ballast apparatus includes a container assembly and a foot assembly adapted for connection to a truck bed. An inlet aperture is located on a wall of the container assembly. A quantity of sand can be added to the container assembly through the inlet aperture. A cover assembly covers the inlet aperture for retaining the sand inside the container assembly. The container assembly is adapted to be juxtaposed to a fender well projecting upward from the truck bed adjacent to a side wall of the truck bed. The foot assembly includes a plurality of apertures adapted to receive connectors for connecting the container assembly to the truck bed. In one embodiment, the container assembly includes a fender-well shaped outer portion adapted to fit over a fender well.