An absorbent article having a thickness direction, a widthwise direction and a lengthwise direction that are perpendicular to one another, and having an absorbent body provided with an absorbent core having liquid-absorbing fibers. The absorbent body is provided with a folding line that that guides in a manner such that folding occurs, projects toward the skin-side in the thickness direction, and extends in the lengthwise direction. The absorbent core has a low-density section that exhibits a lower distribution density of liquid-absorbing fibers than do the surrounding sections and is formed in the location of the folding line in the widthwise direction, a skin-side layer positioned on the skin side in the thickness direction relative to the low-density section, and a non-skin-side layer positioned on the non-skin side in the thickness direction relative to the low-density section. However, the liquid-absorbing fibers are present in the low-density section. The skin-side layer is folded in a manner such that the section corresponding to the folding line projects toward the skin side in the thickness direction.