  We propose the inverse seesaw mechanism as a way to understand small Majorana
masses for neutrinos in warped extra dimension models with seesaw scale in the
TeV range. The ultra-small lepton number violation needed in implementing
inverse seesaw mechanism in 4D models is explained in this model as a
consequence of lepton number breaking occurring on the Planck brane. We
construct realistic models based on this idea that fit observed neutrino
oscillation data for both normal and inverted mass patterns. We compute the
corrections to light neutrino masses from the Kaluza-Klein modes and show that
they are small in the parameter range of interest. Another feature of the model
is that the absence of global parity anomaly implies the existence of at least
one light sterile neutrino with sterile and active neutrino mixing in the range
suggested by the LSND and MiniBooNE observations.
