Abstract: A concave finger nail file includes a retention base and an abrasive surface. The retention base may have any suitable shape, such as a cube, a cylinder or a D-shaped tube. The retention base may be solid or hollowed-out. A concave cavity is formed in a top of the retention base. The abrasive surface is applied to the concave cavity. The abrasive surface may also be applied to a bottom or to a side wall of the retention base. The retention base is held between a forefinger and thumb of one hand; a finger or thumb of the other hand is inserted into the concave cavity; and the retention base is pivoted about the finger or thumb of the other hand to file the end of a nail. A second embodiment of the concave finger nail file includes a removable peel and stick abrasive surface.