According to the present invention, an absorbent article (1) has a longitudinal direction, a lateral direction intersecting the longitudinal direction and a front-rear direction intersecting the longitudinal direction and the lateral direction, and is provided with a front waist part (30) along the lateral direction, a rear waist part (20) along the lateral direction, and a crotch part (10) provided between the front waist part (30) and the rear waist part (20), wherein an edge section on one side of the rear waist part (20) in the lateral direction is bonded to an edge section on one side of the front waist part (30) in the lateral direction, the other side of the rear waist part (20) in the lateral direction is provided with a locking part (41) protruding from the rear waist part (20) in the lateral direction during wearing and capable of locking to the front waist part (30), at least an upper edge section of the rear waist part (20) is provided with an elastic region (X) along the lateral direction and, in the lateral direction, the distance between one side edge (Xe1) of the elastic region (X) and the center of the crotch part (10) is smaller than the distance between the other side edge (Xe2) of the elastic region (X) and the center of the crotch part (10).
