To provide an absorbent sheet for pet, allowing a purchaser to grasp a thickness of the absorbent sheet for pet and to obtain a sense of security to absorption performance.SOLUTION: An absorbent sheet 10 for pet includes: a front surface sheet 12 arranged at a front surface side; a rear surface sheet 14 arranged at a rear surface side; and an absorber 20 provided between the front surface sheet and the rear surface sheet. The absorber has at least a front surface recess 50 recessed from the front surface side to the rear surface side, and a rear surface recess 60 recessed from the rear surface side to the front surface side. At least a part of a front surface bottom 51 of the front surface recess 50 is positioned in the same position in a thickness direction T as a rear surface bottom 61 of the rear surface recess 60, or at the rear surface side than the rear surface bottom 61.SELECTED DRAWING: Figure 3【課題】購入者がペット用吸収性シートの厚みを把握し、吸収性能に対する安心感を得易いペット用吸収性シートを提供する。【解決手段】ペット用吸収性シート10は、表面側に配置される表面シート12と、裏面側に配置される裏面シート14と、表面シートと裏面シートとの間に設けられた吸収体20と、を有する。少なくとも吸収体は、表面側から裏面側へ凹む表面凹部50と、裏面側から前記表面側に凹む裏面凹部60と、を有する。表面凹部50の表面底部51の少なくとも一部は、裏面凹部60の裏面底部61と厚み方向Tにおける同じ位置又は裏面底部61よりも裏面側に位置する。【選択図】図3