Abstract: A cover for a spray gun designed to be placed over a spray gun when spraying to prevent overspray on the spray gun and the user's hand and forearm. The cover is made from a thin panel made of flexible fabric or paper. The panel is of sufficient size and shape so that when its lateral edges are attached together, it forms a partially enclosed structure which covers the assembled spray gun and the user's hand when operating the spray gun. Formed along the front section of the cover is a front opening which enables the tip of the spray gun to extend through the cover when the spray gun is placed inside the cover. The rear edges of the panel are unattached thereby forming a wide rear opening into the cover so that the spray gun and user's hand may be easily inserted into the cover to operate the spray gun. An optional top opening is also created on the panel which allows a hook element on the spray gun to extend through so that the spray gun may be temporarily suspended from a hook in between uses.