The present invention makes it possible to suppress occurrence of leakage in an absorbent article that is folded by way of two fold lines extending in the width direction. A disposable diaper (10) comprises: an absorbent body (40) that has a pair of first folds (FL1) and a pair of second folds (FL2) that extend in the front-to-rear direction and a fold line (FL3) for folding the disposable diaper in two. The absorbent body has, when in a folded state, a first area (401) that is located between the pair of first folds, a pair of second areas (402) that are located between the first folds and the second folds and that are each disposed on the side facing the skin in the first area, and a pair of third areas (403) that are located further to the outside in the width direction than the second fold and that are each disposed on the side facing the skin in the second areas. The third area (403) has a low basis weight area (404). The outer edge (403E2) of the third area is located further to the outside in the width direction than a first fold line. The fold line (FL3) is provided in the low basis weight area (404).本發明的課題係在於針對藉由朝寬度方向延伸之對折線所折疊之吸收性物品,可抑制洩漏產生。用後即棄式紙尿布(10)係具備有:吸收體(40),其具有朝前後方向延伸的一對第1折線(FL1)和一對第2折線(FL2);及用來將用後即棄式紙尿布對折之對折線(FL3)。吸收體係在折疊狀態下具有:位於一對第1折線之間的第1區域(401);位於第1折線與第2折線之間,分別配置於第1區域的肌膚對向面側之一對第2區域(402);及位於較第2折線更靠近寬度方向外側,且分別配置於第2區域的肌膚對向面側之一對第3區域(403)。第3區域(403)係具有低基重區域(404)。第3區域的外側緣(403E2)係位於較第1折線更靠近寬度方向外側。對折線(FL3)係設在低基重區域(404)。10‧‧‧吸收性物品20‧‧‧前腰圍區域25‧‧‧胯下區域30‧‧‧後腰圍區域35‧‧‧腳圍開口部40‧‧‧吸收體40a‧‧‧吸收芯材40b‧‧‧芯材繞包層50‧‧‧頂面薄片70‧‧‧側薄片75‧‧‧腳伸縮部77‧‧‧彈性構件90‧‧‧扣帶95‧‧‧目標部404‧‧‧低基重區域FL1‧‧‧第1折線FL2‧‧‧第2折線FL3‧‧‧對折線
