A truck body protector apparatus including at least one elongated rectangular mounting plate affixed to a top surface of one of a pair of sidewalls of a pickup truck. An interior surface of a rectangular flexible fabric sheet proximal a top end of the sheet is disposed on an entirety of an upper surface of the at least one mounting plate. A height of the sheet is configured to cover an external surface of one of the pair of sidewalls. A weighted rod is continuously attached to a bottom end of the sheet. A pair of hook and loop cinch straps is secured between the upper surface of the at least one mounting plate and the interior surface of the sheet. The sheet has a rolled position and an alternate unrolled position.