In a disposable wearing article, a back waist region includes a back waist belt and a downward openable pocket facing the back waist belt at the middle. The pocket includes an inner wall facing the belt and an outer wall therebetween. The belt and the inner wall are contiguous at a contiguous lower edge of the belt and the inner wall. The inner and outer walls are contiguous at a contiguous upper edge of the inner and outer walls. The back waist region includes joining areas spaced from each other and joining the belt and the inner wall to each other. The joining areas include inside parts located on inner sides of any of respective imaginary lines extending upward along respective lateral edges of an absorbent and outside parts located on outer sides of the imaginary lines and the lateral edges of the absorbent.
