A tapered roller bearing, comprising: an inner ring comprising a raceway surface having a tapered shape on an outer peripheral surface of the inner ring; an outer ring comprising a raceway surface having a tapered shape on an inner peripheral surface of the outer ring; a plurality of tapered rollers, which are arranged between the raceway surface of the inner ring and the raceway surface of the outer ring so as to be rollable and each comprise a rolling surface having a tapered shape on an outer peripheral surface of each of the plurality of tapered rollers; and a cage which is configured to retain the plurality of tapered rollers at predetermined intervals, wherein the raceway surface of the outer ring comprises a composite crowning surface, the composite crowning surface comprising a center curve (3a1), which is formed at a center portion in a generating-line direction and has a curvature radius R 1, and end portion curves (3a2, 3a3), which are formed on both sides of the center curve (3a1) in the generating-line direction and each have a curvature radius R 2,R 3 which is smaller than the curvature radius R 1 of the center curve, wherein each of the drop amounts (D1, D2) of the end portion curves is set to 0.02 mm or more and 0.07 mm or less, characterized in that the raceway surface of the outer ring is entirely subjected to superfinishing, and wherein each of a ratio R 2 /R 1 of the curvature radius R 2 of the end portion curve (3a2) to the curvature radius R 1 of the center (3a1) curve and a ratio R 3 /R 1 of the curvature radius R 3 of the end portion curve (3a3) to the curvature radius R 1 of the center curve (3a1) is set to 0.02 or more. an inner ring comprising a raceway surface having a tapered shape on an outer peripheral surface of the inner ring; an outer ring comprising a raceway surface having a tapered shape on an inner peripheral surface of the outer ring; a plurality of tapered rollers, which are arranged between the raceway surface of the inner ring and the raceway surface of the outer ring so as to be rollable and each comprise a rolling surface having a tapered shape on an outer peripheral surface of each of the plurality of tapered rollers; and a cage which is configured to retain the plurality of tapered rollers at predetermined intervals, wherein the raceway surface of the outer ring comprises a composite crowning surface, the composite crowning surface comprising a center curve (3a1), which is formed at a center portion in a generating-line direction and has a curvature radius R 1, and end portion curves (3a2, 3a3), which are formed on both sides of the center curve (3a1) in the generating-line direction and each have a curvature radius R 2,R 3 which is smaller than the curvature radius R 1 of the center curve, wherein each of the drop amounts (D1, D2) of the end portion curves is set to 0.02 mm or more and 0.07 mm or less, characterized in that the raceway surface of the outer ring is entirely subjected to superfinishing, and wherein each of a ratio R 2 /R 1 of the curvature radius R 2 of the end portion curve (3a2) to the curvature radius R 1 of the center (3a1) curve and a ratio R 3 /R 1 of the curvature radius R 3 of the end portion curve (3a3) to the curvature radius R 1 of the center curve (3a1) is set to 0.02 or more.