PROBLEM TO BE SOLVED: To provide an absorbent article which can be attached more reliably to underwear even when the absorbent article includes a rear flap 50 having a shape of stretching largely in a product width direction toward the rear side from the center of a product longitudinal direction L.SOLUTION: An absorbent article 1 includes: an absorbent body 3 which has a liquid permeable front surface sheet 11, a liquid impermeable rear surface sheet 12, and an absorber 7 arranged between the front surface sheet 11 and the rear surface sheet 12 and a rear flap 50 which is configured so as to extend from an outer edge part 3E in a product width direction W of the absorbent body 3 and cover the hip of a wearer. A plurality of adhesive regions 81/82 on which an adhesive agent is applied are provided on the surface of a non-skin contact surface side S2 of the rear flap 50. Each of the plurality of adhesive regions 8 extends in a product longitudinal direction L. The plurality of adhesive regions 8 include at least two kinds of adhesive regions 81/82 having different lengths in the product longitudinal direction L.
