Abstract: A wind deflector apparatus for use in a bed of a pickup truck for reducing air pressure and wind drag forces created in the bed of the pickup truck when it is moving forward including a generally rectangular planar back panel; a generally rectangular planar front panel; a pair of side panels slidably sandwiched between the back panel and front panel; a side panel coupling mechanism for coupling the side panels between the back panel and front panel and yet allowing opposing and outward longitudinal slidable movement of the side panels with respect to both the front panel and back panel in an extended position for use in deflecting air and allowing inward longitudinal slidable movement of the side panels with respect to both the front panel and back panel in a retracted position for stowage; and a deflector coupling mechanism for pivotally coupling the back panel to a bed of a pickup truck at a location near the tailgate whereby the front panel and back panel extend across the bed such that the deflector can b