The present invention provides an absorbent article which is capable of providing a wearer with expectations of a high-quality absorbent article having, in particular, excellent elasticity without having to stretch the absorbent article before wearing, and which is capable of providing excellent wearing comfort and exhibiting high absorbent capacity when worn. This absorbent article includes an elastic sheet (24) disposed in a rear side region (A3) and positioned on a non-skin-facing surface side of an absorber (22), and a surface sheet (21) having a light transmittance of 45% or greater. Furthermore, the absorber (22) has, in the rear side region (A3) which overlaps with the elastic sheet (24) in a thickness direction, a slit portion existing region (AE) in which a plurality of slit portions that extends in a width direction exists, and a slit portion non-existing region (N2) in an excretion opening corresponding region (A2), wherein the slit portion existing region (AE) includes a wide slit portion (SE) in a first existing region (a1) that is most proximal to the excretion opening corresponding region (A2).
