A one-way clutch comprising: an inner ring; an outer ring; a plurality of rollers that is arranged between an outer periphery of the inner ring and an inner periphery of the outer ring, that allows the inner and outer rings to rotate together with each other in a state where the rollers are pressed against the inner and outer rings and are engaged with the inner and outer rings, and that allows the inner and outer rings to rotate relative to each other in a state where the rollers are disengaged from the inner and outer rings; a cage that retains the rollers at predetermined intervals in a circumferential direction; and a plurality of elastic members that is attached to the cage and that urges the corresponding rollers in a direction in which the rollers are pressed against the inner and outer rings, wherein the cage includes a pair of axially facing annular portions, each annular portion having formed on the inner periphery a plurality of recesses at predetermined intervals in the circumferential direction, and a plurality of cage bar portions formed separately from the annular portions, both axial end portions of each of the cage bar portions being fitted to the respective annular portions; wherein the cage bar portions comprise load receiving faces (77c1) formed at respective axial end portion of each of the cage bar portions, and the load receiving faces (77c1) receive an urging load of the corresponding elastic member in a state where the cage bar portion is fitted to the annular portions; characterized in that a fitted face (76a1) of the annular portions corresponding to the shape of the load receiving face (77c1) of the corresponding cage bar portion is formed in each recess; and each load receiving face (77c1) is formed in a V-shape. an inner ring; an outer ring; a plurality of rollers that is arranged between an outer periphery of the inner ring and an inner periphery of the outer ring, that allows the inner and outer rings to rotate together with each other in a state where the rollers are pressed against the inner and outer rings and are engaged with the inner and outer rings, and that allows the inner and outer rings to rotate relative to each other in a state where the rollers are disengaged from the inner and outer rings; a cage that retains the rollers at predetermined intervals in a circumferential direction; and a plurality of elastic members that is attached to the cage and that urges the corresponding rollers in a direction in which the rollers are pressed against the inner and outer rings, wherein the cage includes a pair of axially facing annular portions, each annular portion having formed on the inner periphery a plurality of recesses at predetermined intervals in the circumferential direction, and a plurality of cage bar portions formed separately from the annular portions, both axial end portions of each of the cage bar portions being fitted to the respective annular portions; wherein the cage bar portions comprise load receiving faces (77c1) formed at respective axial end portion of each of the cage bar portions, and the load receiving faces (77c1) receive an urging load of the corresponding elastic member in a state where the cage bar portion is fitted to the annular portions; characterized in that a fitted face (76a1) of the annular portions corresponding to the shape of the load receiving face (77c1) of the corresponding cage bar portion is formed in each recess; and each load receiving face (77c1) is formed in a V-shape.