  We present a band structure study of orbital polarization and ordering in the
two-dimensional triangular lattice transition metal compounds LiVO_2 and
NaTiO_2. It is found that while in NaTiO_2 the degeneracy of t_{2g} orbitals is
lifted due to the trigonal symmetry of the crystal and the strong on cite
Coulomb interaction, in LiVO_2 orbital degeneracy remains and orbital ordering
corresponding to the trimerization of the two-dimensional lattice develops.
