Disclosed is a finger guard. In an example embodiment, the finger guard includes a rectangular reticulate or netlike pad networked in a movable manner such that a plurality of unit plate pieces are connected to one another in four directions by a plurality of connecting loop members, and at least a pair of fastening belt members provided to extend or protrude parallel with one side of the reticulate pad, wherein the finger guard is configured to be worn in the form of a protective armor such that the reticulate pad covers and wraps around the dorsal side of a finger, upon which the finger guard is to be worn, and the respective fastening belt members pass the volar side of the finger to then be connected to be hooked on to one of the unit plate pieces in a state in which a portion of the volar side of the finger is opened and exposed in a length direction of the finger. With this configuration, the finger guard of the present disclosure is configured to be worn in the form of a protective armor such that fastening of the finger guard can be appropriately adjusted so as to be tailored to the thickness of a wearer's finger when the finger guard is worn for finger protection, thereby achieving enhanced functionality and quality for efficiently performing an elaborate and precise work by improving convenience in use and wearing comfort.