We have evaluated the surface energies of the low index facets of δ-Pu. We find that the lowest energy surfaces have anti-ferromagnetic geometries with magnetic spins alternating along planes parallel to the surface. Of these, the (111) surface has the lowest surface energy and so would be the dominant surface of a macroscopic single crystal material. Polycrystalline materials will exhibit multiple surfaces; we predict the (111) will be the most abundant and the (110) the least abundant.