An absorbent article (1) includes: an absorbent main body (10) including an absorbent body (121) and leak-proof walls (50) ； a front waist portion (20) ； and a back waist portion (30) . The absorbent body (121) includes a narrow portion (121n), and The leak-proof walls (50) each includes fixed portions (55) and rising portions (56). A one-side waist portion (20) is overlapped, in the up-down direction, with the narrow portion (121n) on the non-skin side of the narrow portion (121n) . Adhesive (121Ha, 121Hb) is applied to at least either one of a non-skin-side surface of a skin-side sheet portion (122a) of the absorbent main body (10) and a skin-side surface of a non-skin-side sheet portion (122b) of the absorbent main body (10). The application is made in a region that is outside the narrow portion (121n) and above a lower end of the one-side waist portion (20) . The fixed portions (55) are overlapped with the skin side of the absorbent body (10). When an intersection (121u) between the lower end of the one-side waist portion (20) and the side end (121s) of the narrow portion (121n) uses as a reference, a rise start portion (59) of the rising portion (56) is located outward in the left-right direction with respect to the intersection (121u).
