  We propose a type of hybrid Seesaw model that combines Type-1 and Type-2
Seesaw mechanism in multiplicative way to generate tree level Majorana neutrino
mass and provides a Dark Matter candidate. The model extends the Standard Model
by extra gauge symmetry $U(1)_{D}$ and hidden sector consisted of chiral
fermions and additional scalar fields. After spontaneous symmetry breaking,
light neutrino masses are generated not only by exchange of the new heavy
fermions as Type-1 Seesaw, but also by coupling to the naturally small induced
vacuum expectation value of new heavy scalar as Type-2 Seesaw. An unbroken
residue of $U(1)_{D}$ protects the lightest Dirac fermion required by anomaly
cancellation in hidden sector from decaying, therefore giving rise to a Dark
Matter candidate. Due to strong enough Seesaw suppression from our
hybridization, new physics scale can be as low as TeV in this model and
discovering signal from LHC data is possible in near future.
