A disposable pull-on diaper that keeps in close contact with a wearer's crotch region includes a lower torso cover and an absorbent chassis. The absorbent chassis has a front end portion overlapping a front waist region of the lower torso cover and a front end portion of the front end portion is joined to an elastic region in the lower torso cover. A front end adjoining portion of the front end portion is not joined to the elastic region. An area in the absorbent chassis being adjacent the front end adjoining portion on the side of the crotch region is joined to an inelastic region defined on the side closer to the crotch region than to the elastic region. The absorbent body contained in the absorbent chassis extends at least from the crotch region to the front end adjoining portion. The front end portion in the front end portion of the absorbent chassis is defined by a portion of the cover sheet wrapping the absorbent body which extends outward beyond the absorbent body.
