Abstract: A oneway clutch device comprises a plurality of rollers interposed between an inner race and an outer race for carrying out torque transmission only at the time of relative rotation in one direction between the inner race and the outer race, springs for biasing these rollers in a direction of engagement, and a retainer having an annular portion to be fitted on the inner race for retaining the rollers and the springs. The retainer is formed with a roller latching piece formed for holding the rollers biased by the springs, together with the inner race in a state that it is not assembled in the outer race.