  We discuss how Dirac neutrinos can naturally be generated in supersymmetry
and how they allow for an Affleck-Dine leptogenesis scenario, in which a
left-right asymmetry is generated in the sneutrino sector, the left part of
which is transferred to a baryon asymmetry via sphaleron transitions. No exotic
fields need to be added to the MSSM other than the right-handed neutrino.
