An inorganic fiber-formed article, comprising: inorganic fibers; and needle marks extending in a thickness direction and including vertical bundles composed of the inorganic fibers extending in the thickness direction, wherein in the case where a peel test described below is performed, when the vertical bundles having a diameter of 100 μm or more and a protruding length of 2 mm or more among all the vertical bundles protruding from a first peeled surface and a second peeled surface in a region measuring 50 mm × 50 mm are expressed as effective vertical bundles, at least one of characteristics (I) and (II) described below is satisfied, (I) an average volume of the effective vertical bundles per needle mark determined by dividing a total volume of portions of the effective vertical bundles protruding from the peeled surfaces in the region by the number of the needle marks in the region is 1.0 mm 3 or more, and (II) an average volume of a portion of each of the effective vertical bundles protruding from the peeled surfaces in the region is 3.0 mm 3 or more, and wherein the <peel test> is performed as follows: a test specimen having a width of 50 mm and a length of 150 mm is cut out from the inorganic fiber-formed article, a cut having a depth of 30 mm is made in a middle of a thickness of an end face of the test specimen, and both ends formed by the cut are held by gripping jigs, mounted on a tensile testing machine, and pulled in opposite thickness directions at a speed of 500 mm/min into two pieces. inorganic fibers; and needle marks extending in a thickness direction and including vertical bundles composed of the inorganic fibers extending in the thickness direction, wherein in the case where a peel test described below is performed, when the vertical bundles having a diameter of 100 μm or more and a protruding length of 2 mm or more among all the vertical bundles protruding from a first peeled surface and a second peeled surface in a region measuring 50 mm × 50 mm are expressed as effective vertical bundles, at least one of characteristics (I) and (II) described below is satisfied, (I) an average volume of the effective vertical bundles per needle mark determined by dividing a total volume of portions of the effective vertical bundles protruding from the peeled surfaces in the region by the number of the needle marks in the region is 1.0 mm 3 or more, and (II) an average volume of a portion of each of the effective vertical bundles protruding from the peeled surfaces in the region is 3.0 mm 3 or more, and (I) an average volume of the effective vertical bundles per needle mark determined by dividing a total volume of portions of the effective vertical bundles protruding from the peeled surfaces in the region by the number of the needle marks in the region is 1.0 mm 3 or more, and (II) an average volume of a portion of each of the effective vertical bundles protruding from the peeled surfaces in the region is 3.0 mm 3 or more, and wherein the <peel test> is performed as follows: a test specimen having a width of 50 mm and a length of 150 mm is cut out from the inorganic fiber-formed article, a cut having a depth of 30 mm is made in a middle of a thickness of an end face of the test specimen, and both ends formed by the cut are held by gripping jigs, mounted on a tensile testing machine, and pulled in opposite thickness directions at a speed of 500 mm/min into two pieces. <EOS>