Abstract: According to the present invention, a nail filing guide is provided for controlling the shape and quality of symmetry of a nail, particularly a fingernail. The nail filing guide comprises a digit rest and a shape wall; the shape wall having an outer contour defining a desired nail shape and a thickness size to accommodate the size of the nail. The outer contour of the wall has an angle established to shape a nail perpendicular to the growth pattern of the nail and a contour to accommodate the desired contour of the nail. Specific embodiments of the nail guides include a pointed contour, a blunt contour, a so-called opaque contour, and a round contour. Extending outward from the shape wall is a support porch for guiding a nail file rested against the support porch. Importantly, the tip of the shape wall is curved to conform generally to the natural lateral curve of the nail.