Abstract: The actuating nail file assembly includes a housing, a controller, a circuit board, a powertrain, a slider, a head, and a power supply. The assembly is configured to selectively induce actuation of the head in one or more directions. The head is configured to engage a nail of a user, such as fingernail or toenail, and work a surface or edge of the nail to a desired condition. The head may be configured to file the nail by containing an abrasive surface configured to removed portions of the nail. Alternatively, the head may be configured to polish the nail by containing a polishing surface texture. The controller regulates the operation of the powertrain. The powertrain selectively induces radial and linear movement of the head in a plurality of directions so as to repetitively alternate between at least two opposing directions.