An absorbent article comprising: leak-proof cuffs extending along a longitudinal direction and located at side regions in a width direction of the absorbent article, wherein the leak-proof cuff is folded on a folding line extending along the longitudinal direction of the leak-proof cuff and is divided into an upper region and a lower region at the folding line, in the leak-proof cuff folded on the folding line, the folding line is located inside in the width direction from a free edge of the leak-proof cuff, the upper region includes a first region located at a side of the free edge relative to a center of the upper region in the width direction and a second region located at a side of the folding line, in each of the first region and the second region, at least one elastic member extending along the longitudinal direction is provided in a stretched state, in a case where an elongation of the upper region in a natural state is defined as 0, and an elongation in a maximum stretched state is defined as 100, a stress σ1 of the first region is larger than a stress σ2 of the second region at an elongation of 5, and the stress σ2 of the second region is larger than the stress σ1 of the first region at an elongation of 100, wherein, of the elastic members, the elastic member located closest to the free edge in the first region has a higher extension rate than an extension rate of the elastic member located closest to the folding line in the second region, and wherein, of the elastic members, the elastic member located closest to the folding line in the second region is thicker than the elastic member located closest to the free edge in the first region. leak-proof cuffs extending along a longitudinal direction and located at side regions in a width direction of the absorbent article, wherein the leak-proof cuff is folded on a folding line extending along the longitudinal direction of the leak-proof cuff and is divided into an upper region and a lower region at the folding line, in the leak-proof cuff folded on the folding line, the folding line is located inside in the width direction from a free edge of the leak-proof cuff, the upper region includes a first region located at a side of the free edge relative to a center of the upper region in the width direction and a second region located at a side of the folding line, in each of the first region and the second region, at least one elastic member extending along the longitudinal direction is provided in a stretched state, in a case where an elongation of the upper region in a natural state is defined as 0, and an elongation in a maximum stretched state is defined as 100, a stress σ1 of the first region is larger than a stress σ2 of the second region at an elongation of 5, and the stress σ2 of the second region is larger than the stress σ1 of the first region at an elongation of 100, wherein, of the elastic members, the elastic member located closest to the free edge in the first region has a higher extension rate than an extension rate of the elastic member located closest to the folding line in the second region, and wherein, of the elastic members, the elastic member located closest to the folding line in the second region is thicker than the elastic member located closest to the free edge in the first region.