A paint shield for releasable attachment to the head of a paint gun sprayer is disclosed for preventing overspray from contacting other exposed surfaces or components outside of the intended surface. The paint shield is comprised of a single planar sheet of flexible, sturdy, impermeable material, such as aluminum. The shield includes a base panel through which the nozzle of the spray gun is secured. A pair of contoured members extend away from the base member to make contact with the adjoining pavement, ground, or wall to establish the distance and the angle in which the nozzle is maintained from the surface. This construction assures that the width and angular velocity of the spray evenly covers the surface without undue waste. The paint shield may be preformed for specific cross sections of objects such as curbing or gutters.