An absorbent article includes a fluid permeable top sheet, a fluid impermeable back sheet, and an absorbent body disposed therebetween, and in addition is provided with an evagination means extending in a longitudinal direction between the top sheet and the back sheet. The top sheet has a first attachment region attached to the evagination means, second attachment regions attached to the vicinity of both side edges of the absorbent article, and an unattached region positioned between the regions. In the unattached region, many inflected creases, in particular, diagonally directed creases directed from the first attachment region towards both side edges are generated.