Provided is an absorbent article with which curling of a hip flap can be improved. This absorbent article (1) has a fore-aft direction L and width direction (W) that are orthogonal to each other, a center region (S1) that is disposed under the crotch of a wearer, and a rear-side region (S3) that is located to the rear side of the center region (S1). A hip flap (4) that bulges to the outside in the width direction W is provided in the rear-side region (S3), the outer edge (4E) of the hip flap (4) is formed in a corrugated shape having a multiplicity of protrusions (4F), and compression portions (85) are formed along an imaginary line (IL), which is obtained by joining the bases of the protrusions (4F), further to the inside than the imaginary line (IL).