PROBLEM TO BE SOLVED: To provide a disposable diaper, where its parts surrounding the wearers legs closely fit around them, and all the parts opposite the wearers crotch and hip area are effectively tightened to prevent the formation of any clearance between the diaper and this area.SOLUTION: In this disposable diaper 1, a first elastic material 41 around the legs crosses the crotch part 11f of a cover material 11 nearly in the lateral direction X, and extends from the crotch part 11f of the cover material 11 toward nearly the rear side along right and left side edges 11e. The right and left side edges 41a of the first elastic material 41 around the legs extend to right and left fastener joint parts 11d or its vicinity. A plurality of hip elastic materials 44 are provided at the hip part 11g located behind the area where the first elastic material 41 around the legs at the cover material 11 crosses the crotch part 11c.