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Multi-Higgs doublet models appear in many interesting extensions of thestandard model (SM). But they suffer from Higgs-mediated flavor changingneutral current (FCNC) problem which is very generic. In this talk, I describethat this problem can be resolved or mitigated if we introduce local $U(1)_H$Higgs flavor gauge symmetry. As examples, I describe chiral $U(1)_{H}$ modelswhere the right-handed up-type quarks also carry $U(1)_H$ charges and discussthe top forward-backward asymmetry (FBA) and $B\rightarrow D^{(*)} \tau \nu$puzzle. Next I describe the two-Higgs doublet models where the usual $Z_2$symmetry is implemented to $U(1)_H$ and show how the Type-I and Type-II modelsare extended. One possible extension of Type-II has the same fermion contentswith the leptophobic $E_6$ $Z^{'}$ model by Rosner, and I discuss the neutrinosector in this model briefly.

Multi-Higgs doublet models with local $U(1)_H$ gauge symmetry and neutrino physics therein