An adjustment apparatus for a sneeze guard includes a support post having a mounting bar with two parallel ridges along the rear side. First and second support frames are slidably interconnected and secured to the ridges on the mounting bar in parallel relation, the outer side of first support frame facing the outer side of the second support frame. The first support plate is pivotally connected and adjustably secured in a plurality of rotational positions to the inner side of the first support frame. The first support plate includes a holder on the inner side attached to one end of a transparent pane of a sneeze guard. The second support plate is pivotally connected and adjustably secured in a plurality of rotational positions to the inner side of the second support frame. The second support plate includes a holder on the inner side attached to one end of an opposing transparent pane of a sneeze guard. The adjustment apparatus allows each of the transparent panes in a series of interconnected sneeze guard panes to be adjusted vertically and rotationally, independently of any other pane in the series.