An absorbent article such as a sanitary napkin has a respective wing-shaped flap extending outward from each side of the main body of the absorbent article. Each wing-shaped flap has a front profile line and a rear profile line. The front profile line is a wave-shape formed by a repetition of convex portions and concave portions. The angle between a line connecting the vertex of the outermost concave portion of the wing-shaped flap with the origin point of the front profile line of the wing-shaped flap and another line originating at the origin point of the front profile line of the wing-shaped flap is 60-65°.