  Flavons are crucial for understanding lepton mixing in models with
non-Abelian discrete symmetries. They also result in charged lepton flavour
violation (CLFV) via the couplings with leptons. I emphasise that the
flavon-triggered CLFV succeeds strong connections with lepton flavour mixing.
Relations between branching ratios of CLFV decays and mixing angles are
discussed, and CLFV sum rules are obtained. Flavons with masses around hundreds
of GeV are consistent by current CLFV measurements.
