  The presence of flavor symmetries in the lepton sector may have several
consequences for the generation of the baryon asymmetry of the Universe via
leptogenesis. We review the mechanism in general type-I, type-II and type-III
seesaw models. We then turn to the discussion of the cases when the asymmetry
is generated in the context of seesaw models extended with flavor symmetries,
before or after flavor symmetry breaking. Finally we explain how the interplay
between type-I and type-II seesaws can (or not) lead to viable models for
leptogenesis even when there is an exact mixing pattern enforced by the flavor
symmetry.
