An absorbent article 1 according to the present invention includes a topsheet 10, a backsheet 20, and an absorber 30. The absorber 30 has a body unit 310 having a foreside constricted portion 312A and a backside constricted portion 312B, and a pair of extension units 320 extending outside in the widthwise direction of the absorber 30 from the body unit 310. An outer region 322 is folded toward an inner region 321 at the side of the topsheet 10, and the maximum length L321 of the inner region 321 along the longitudinal direction L of the absorber 30 is shorter than the maximum length L322 of the outer region 322.
