This disposable diaper (10) is provided with: a skin-surface-side sheet (50) disposed at a wearer-skin-contacting surface side a non-skin-surface-side sheet (60) disposed at a non-skin-contacting surface side an absorbent body (40) a torso-encircling holding section that holds the disposable diaper to the body of the wearer and a leg extending/contracting section (75). The leg extending/contracting section is disposed at the inside in the product widthwise direction or the inside in the product lengthwise direction with respect to the diaper edges configuring the outer periphery of the disposable diaper. A portion of the torso-encircling holding section is disposed at a first region (R1) to the outside in the product lengthwise direction from the leg extending/contracting section and/or a second region (R2) to the outside in the product widthwise direction from the leg extending/contracting section, and a joining region (65) at which the skin-surface-side sheet and the non-skin-surface-side sheet are joined is provided along the diaper edges.
