A partial denture having an artificial tooth, a denture base holding the artificial tooth, and a clasp fixed to the denture base, wherein the clasp includes a back-side arm and a front-side arm and does not include a rest, the back-side arm extending in a rearward bulging convex on a back side of a dentition-extended range of the denture base, the front-side arm extending in a forward bulging convex toward a front side of the dentition-extended range of the denture base, wherein the back-side arm and the front-side arm extend within a height range ranging from an extended plane of a top surface of a crown of the artificial tooth toward the denture base side.