An absorbent article includes an absorbent main body, side flaps, leakage barriers, and an elastic member joined in between the side flaps in the absorbent main body, and stretchable and shrinkable in a width direction. Each leakage barrier includes a standing portion in which an outer side in the width direction is a fixed end, and an inner side in the width direction is a free end, and a supporting portion which is adjacent to one end portion in a longitudinal direction of the standing portion and overlaps with the elastic member in a thickness direction. The supporting portion is fixed to the absorbent main body by the heat welding portion. Each side flap is folded to the inner side in the width direction at a position of a folding line which passes through the supporting portion and extends along the longitudinal direction in a plan view.
