  A search for excited leptons, e*, mu*, tau*, nu_e*, nu_mu*, and nu_tau* was
performed with the L3 detector at LEP using data collected at a centre-of-mass
energy of 189 GeV, corresponding to an integrated luminosity of 176 pb^{-1}. No
evidence of their production is observed. From the searches for pair produced
excited leptons, lower mass limits are set close to the kinematic limit. From
the searches for singly produced excited leptons, upper limits on their
couplings are derived in the mass range up to 189 GeV.
