An absorbent article includes the absorbent main body, side flaps, leakage barriers, and an elastic member which is joined in between the side flaps, and is stretchable and shrinkable in the width direction. Each of the leakage barriers includes a standing portion in which the outer side in the width direction is fixed, and the inner side in the width direction is free, and a supporting portion adjacent to one end portion in the longitudinal direction of the standing portion and overlaps the elastic member in the thickness direction. The supporting portion includes an inner side portion which is positioned on the inner side in the width direction and is not fixed to the absorbent main body, and an outer side portion which is positioned on the outer side in the width direction and is fixed to the absorbent main body by the heat welding portion.
