In a tapered roller bearing, each of tapered rollers has a roller large end face, and a large rib end face of an inner ring. The large rib end face is formed at such a position that the large rib end face passes through the reference point, and a curvature radius of the large rib end face is set to a value within a range from 100% to 120% of a distance from a cone center of each of the tapered rollers to a prescribed reference point that is apart from the cone center along an inner ring raceway surface. The roller large end face is formed at such a position that the roller large end face passes through the reference point, and a curvature radius of the roller large end face is set to a value within a range from 80% to 100% of the distance.