A pull-on absorbent article includes: an absorbent main body including an absorbent body along a vertical direction; and waist-circumference sections in a pair respectively located on one end side and another end side of the absorbent main body, the waist-circumference sections each including an elastic member stretchable in a lateral direction, the absorbent main body including extension sections in a pair respectively extending outward on two lateral sides of the absorbent body, the extension sections each having an elastic member stretchable in the vertical direction placed therein, the extension sections each forming a leg opening and including an overlap portion that overlaps in the vertical direction with at least one of the waist-circumference sections in a pair, the overlap portion having at least a part joined to the waist-circumference section, the overlap portion of the extension section having a welded region having a predetermined lateral length placed therein.