Two supersymmetric versions for the theory of a chiral boson with line
arly realized self-duality condition are proposed. In both cases the s
ector of physical states after canonical quantization contains only mo
des propagating to the left. The first version describes a chiral boso
n and its superpartner; the second does not contain nontrivial Fermi d
egrees of freedom. Both actions are rewritten in a locally supersymmet
ric form by introducing an interaction with (1, 0) supergravity in the
superfield and component forms.