A tapered roller bearing comprising: an outer ring having a tapered outer raceway surface formed on an inner peripheral face of the outer ring; an inner ring having a tapered inner raceway surface formed on an outer peripheral face of the inner ring; a plurality of tapered rollers rollably disposed between the outer raceway surface and the inner raceway surface; and a cage comprising a small-diameter-side portion and a large-diameter annular portion connected by a plurality of cage bars, wherein the cage holds the tapered rollers at equal intervals in a circumferential direction of the tapered roller bearing, each tapered roller being disposed in a space between cage bars adjacent to each other, wherein the cage has an outer periphery cylindrical face formed on an outer periphery of a small-diameter-side portion, the outer periphery cylindrical face having a center line that coincides with an axis of the cage, a small-diameter-side outer periphery end portion of the cage has a corner at which an axially outer end face of the cage and the outer periphery cylindrical face meet each other, and an axial position of a tip of the corner is set at a position that substantially coincides with an axial position of an end face of the outer ring, characterized in that the outer ring has an inner periphery cylindrical face formed on an inner periphery of a small-diameter-side portion, the inner periphery cylindrical face having a center line that coincides with a symmetry axis of the outer ring and facing the outer periphery cylindrical face in a radial direction of the tapered roller bearing, and the outer periphery cylindrical face is continuous with an outer peripheral face of each cage bar. an outer ring having a tapered outer raceway surface formed on an inner peripheral face of the outer ring; an inner ring having a tapered inner raceway surface formed on an outer peripheral face of the inner ring; a plurality of tapered rollers rollably disposed between the outer raceway surface and the inner raceway surface; and a cage comprising a small-diameter-side portion and a large-diameter annular portion connected by a plurality of cage bars, wherein the cage holds the tapered rollers at equal intervals in a circumferential direction of the tapered roller bearing, each tapered roller being disposed in a space between cage bars adjacent to each other, wherein the cage has an outer periphery cylindrical face formed on an outer periphery of a small-diameter-side portion, the outer periphery cylindrical face having a center line that coincides with an axis of the cage, a small-diameter-side outer periphery end portion of the cage has a corner at which an axially outer end face of the cage and the outer periphery cylindrical face meet each other, and an axial position of a tip of the corner is set at a position that substantially coincides with an axial position of an end face of the outer ring, characterized in that the outer ring has an inner periphery cylindrical face formed on an inner periphery of a small-diameter-side portion, the inner periphery cylindrical face having a center line that coincides with a symmetry axis of the outer ring and facing the outer periphery cylindrical face in a radial direction of the tapered roller bearing, and the outer periphery cylindrical face is continuous with an outer peripheral face of each cage bar.