An absorbent article having: a longitudinal direction extending to a body foreside and a body backside of a wearer; a widthwise direction which is orthogonal to the longitudinal direction; an inward direction facing a wearer; and an outward direction opposite to the inward direction, the absorbent article comprising: a front waistline region; a back waistline region; and a crotch region which is positioned between the front waistline region and the back waistline region, the absorbent article having: an absorbent main body having an absorber which is disposed at least in the crotch region; and an exterior body including an exterior body sheet which is disposed in the outward direction than the absorbent main body, wherein the exterior body comprises: a foreside exterior body which is joined with the absorbent main body and which is disposed at least in the front waistline region; and a backside exterior body which is joined with the absorbent main body and which is disposed at least in the back waistline region; the foreside exterior body and the backside exterior body are spaced from each other such that a face of the absorbent main body is exposed in the outward direction; wherein an opening unit into which a finger can be inserted is formed in a face at the outward direction's side of the absorbent article; and the opening unit is provided in the overlap region which overlaps with the absorber; wherein the opening unit is a non-joint portion which is provided at a backside end of the overlap region of the foreside exterior body and at which the foreside exterior body and the absorbent main body are not joined with each other; and/or the opening unit is a non-joint portion which is provided at a foreside end of the overlap region of the backside exterior body and at which the backside exterior body and the absorbent main body are not joined with each other. a longitudinal direction extending to a body foreside and a body backside of a wearer; a widthwise direction which is orthogonal to the longitudinal direction; an inward direction facing a wearer; and an outward direction opposite to the inward direction, the absorbent article comprising: a front waistline region; a back waistline region; and a crotch region which is positioned between the front waistline region and the back waistline region, a front waistline region; a back waistline region; and a crotch region which is positioned between the front waistline region and the back waistline region, the absorbent article having: an absorbent main body having an absorber which is disposed at least in the crotch region; and an exterior body including an exterior body sheet which is disposed in the outward direction than the absorbent main body, an absorbent main body having an absorber which is disposed at least in the crotch region; and an exterior body including an exterior body sheet which is disposed in the outward direction than the absorbent main body, wherein the exterior body comprises: a foreside exterior body which is joined with the absorbent main body and which is disposed at least in the front waistline region; and a backside exterior body which is joined with the absorbent main body and which is disposed at least in the back waistline region; a foreside exterior body which is joined with the absorbent main body and which is disposed at least in the front waistline region; and a backside exterior body which is joined with the absorbent main body and which is disposed at least in the back waistline region; the foreside exterior body and the backside exterior body are spaced from each other such that a face of the absorbent main body is exposed in the outward direction; wherein an opening unit into which a finger can be inserted is formed in a face at the outward direction's side of the absorbent article; and the opening unit is provided in the overlap region which overlaps with the absorber; wherein the opening unit is a non-joint portion which is provided at a backside end of the overlap region of the foreside exterior body and at which the foreside exterior body and the absorbent main body are not joined with each other; and/or the opening unit is a non-joint portion which is provided at a foreside end of the overlap region of the backside exterior body and at which the backside exterior body and the absorbent main body are not joined with each other.