Abstract: A wind deflector for a pickup truck or a similar vehicle, is formed with a frame that includes left and right side members for removably attaching to structure in the truck. A rigid wind deflector panel is supported on the frame and extends diagonally up and back from the floor of the truck bed over the tailgate. One or more strap members secure to a lower transverse member of the frame, and each has a bracket member that removably grips the rear lip of the truck bed floor where the tail gate is located. The strap member is tightened to pull the transverse member downward and rearward to hold the wind deflector in place in the truck bed. A spoiler bar can be attached. A tray supported on the frame holds small articles in the space beneath the wind deflector. The wind deflector can be quickly installed and removed.