A laminated plate provided with a first plate and a second plate bonded to the first plate via an intermediate layer, comprising: a first main surface of the first plate opposite to the intermediate layer; a second main surface of the first plate being in contact with the intermediate layer; a third main surface of the second plate being in contact with the intermediate layer; and a fourth main surface of the second plate opposite to the intermediate layer, wherein a thickness of the first plate is thicker than a thickness of the second plate, wherein, in a planar view, the laminated plate includes a peripheral region and an in-plane region, wherein, in at least a part of an outer periphery of the laminated plate, in a cross section orthogonal to the outer periphery, a distance from an outermost periphery of the second plate to the first plate in a thickness direction with respect to the outermost periphery is three times or less a distance between the first plate and the second plate in the in-plane region, wherein the first plate includes a first chamfered region that is chamfered on a periphery of the first plate, wherein the first plate includes a first non-chamfered region adjacent to the first chamfered region on the in-plane side, wherein, in the planar view, the outermost periphery of the second plate is located in the first chamfered region, and wherein in the cross section orthogonal to the outer periphery, a first tangent line at a boundary between the first chamfered region and the first non-chamfered region on a second main surface side intersects with the second main surface at a first angle, the first angle being greater than 0 degrees and less than or equal to 40 degrees. a first main surface of the first plate opposite to the intermediate layer; a second main surface of the first plate being in contact with the intermediate layer; a third main surface of the second plate being in contact with the intermediate layer; and a fourth main surface of the second plate opposite to the intermediate layer, wherein a thickness of the first plate is thicker than a thickness of the second plate, wherein, in a planar view, the laminated plate includes a peripheral region and an in-plane region, wherein, in at least a part of an outer periphery of the laminated plate, in a cross section orthogonal to the outer periphery, a distance from an outermost periphery of the second plate to the first plate in a thickness direction with respect to the outermost periphery is three times or less a distance between the first plate and the second plate in the in-plane region, wherein the first plate includes a first chamfered region that is chamfered on a periphery of the first plate, wherein the first plate includes a first non-chamfered region adjacent to the first chamfered region on the in-plane side, wherein, in the planar view, the outermost periphery of the second plate is located in the first chamfered region, and wherein in the cross section orthogonal to the outer periphery, a first tangent line at a boundary between the first chamfered region and the first non-chamfered region on a second main surface side intersects with the second main surface at a first angle, the first angle being greater than 0 degrees and less than or equal to 40 degrees.