An absorbent article has a longitudinal direction and a lateral direction orthogonal to the longitudinal direction and includes: a belly facing region, a back facing region, an intermediate region positioned between the belly facing region and the back facing region in the longitudinal direction, and an absorbent member including an absorbent core. The absorbent member is only disposed in a portion closer to the belly facing region than a cut line in which the tail of a pet is inserted, and includes: both absorbent side edges opposite to each other in the lateral direction, a first absorbent portion facing a urine opening of the pet, and a second absorbent portion facing a portion outside the urine opening, and the absorbent core includes an first narrow portion (interruption portion) configured to interrupt linkage between the first absorbent portion and the second absorbent portion in the longitudinal direction.
