A nipple protector is provided, which is able to protect a nipple of a user reliably, by protecting the nipple area so as to maintain a non-contact state with the nipple area and thereby avoiding the causing of pain or unpleasant irritation to the nipple area, as well as avoiding the leaving of marks while reducing irritation when abutted against the breast. A nipple protector having a hard outer member or shell and an inner member made of a material which is more flexible and deformable than the outer member, with an internal space being formed inside the nipple protector, wherein the internal space is formed by a cylindrical portion which extends from the outer member and/or the inner member, and the inner member has an abutting section which surrounds with no gap the nipple area of a wearer completely, and the abutting section is a deformable abutting section which deforms elastically and is capable of making contact, with no gap, with the perimeter of the nipple area.