The excited electronic states of carbon disulfide (CS2) are examined theoretically by exploiting the CIS and CIS-MP2 configuration interaction methods in conjunction with extensive sets of basis functions (e.g., 6-311(+)G(*)). At their respective equilibrium geometries, the lowest-lying states of CS2 are predicted to have symmetry labels and electronic energies given by X(1) Sigma(g)(+) < a(3)B(2) < b(3)A(2)(R) < A(1)A(2) < (BB2)-B-1(V) < c(3)B(2) < d(3)A(2) < C(1)A(2), where the letters in parentheses refer to established spectroscopic designations for the R and V absorption systems. The bent b(3)A(2)(R) and c(3)B(2) states are found to correlate with a degenerate (3) Delta(u) level in the linear molecule. Analogous Renner-Teller effects in the (1) Delta(u), level give rise to (1)A(2) and B-1(2) potential surfaces, the latter of which correlates to the well-studied (BB2)-B-1(V) state. The presence of an unexpected crossing between the (1) Delta(u), and (1) Sigma(u)(-) curves of linear CS2 makes definitive assignment for the other member of this Renner-Teller doublet difficult, with an apparent reversal of relative energy ordering encountered as a function of the C-S bond distance. The implications of this effect, as well as the influence exerted by neighboring electronic manifolds (e.g., the hitherto unobserved d(3)A(2) surface which supports spin-orbit allowed electric dipole transitions from the X(1) Sigma(g)(+) ground state), are discussed in terms of recent studies performed on the near-ultraviolet photochemistry and photophysics of CS2. While ab initio properties predicted for the b(3)A(2)(R) State are in good accord with previous spectroscopic measurements, the calculated equilibrium geometry, barrier to linearity, and vibrational frequencies for the (BB2)-B-1(V) potential surface differ significantly from experimental observations.