Abstract: A versatile chair tray has a tray, a block joined to the tray, and a brace pivotally connected to the block. The block is supported on a horizontal portion of a chair arm, and the brace is placed against a vertical portion of the chair arm. Spring clips clamp the tray and block to the chair arm horizontal portion and the brace to the chair arm vertical portion. When the chair tray is not in use, the brace folds against the tray to enable several chair trays to be stacked in a neat and stable pile. In a modified embodiment, mushroom heads on the block and brace engage slots in the chair arm to secure the chair tray to the chair. The chair tray is suitable for use with chairs having many different arm designs.