A clutch unit includes a lever-side clutch portion on an input side, and a brake-side clutch portion on the output side, in which the lever-side clutch portion includes a retainer for retaining a plurality of cylindrical rollers for controlling transmission/interruption of the torque input through engagement/disengagement between the lever-side outer race and an inner race transmitting the torque from the lever-side outer race to the brake-side clutch portion, and an inner centering spring including a lock portion to be locked to an end surface of the retainer, for accumulating an elastic force obtained by the torque input and for restoring the retainer to a neutral state by releasing the elastic force obtained by the torque input from the lever-side outer race and thus accumulated, and on the end surface of the retainer, a hook portion holds the lock portion of the inner centering spring in a protruding manner.