An absorbent article includes: a front waist portion extending along the lateral direction; a back waist portion extending along the lateral direction; and a crotch portion provided between the front waist portion and the back waist portion. A lateral end portion of the back waist portion on a one side and a lateral end portion of the front waist portion on the one side are joined by a first joining portion. The back waist portion has a fastening portion provided on another side in the lateral direction, and the fastening portion is capable of being fastened to the front waist portion when putting on the absorbent article. The front waist portion has a target region to which the fastening portion is to be fastened, and a lateral end of the target region on the one side is located on the one side relative to a lateral central position of the crotch portion.