Abstract: The present invention is a hidden belt weapon which, by means of a simple twisting motion on the part of its wearer, detaches from a belt and simultaneously deploys to a "throwing-star" or "Ninja star" configuration. The operative belt-fastening means (the buckle proper) need not detach with the weapon. More particularly, the hidden belt weapon comprises a backing within which is mounted a central rotating member. A plurality of knife blades are rotatably attached to the periphery of the central rotating member by means of a plurality of blade deployment pins. When the central rotating member and the knife blades are in their collapsed configuration, the member and blades are concealed by the cover. Concealment of the blades by the cover enables the user to carry the weapon in a highly-accessible position on the body, such as over the belt buckle, without detection of the weapon.