The optical properties of the layered compound SnS2 have been studied. Reflectivity spectra were measured at room temperature, in the energy region 1.8-5.6 eV. Optical transmission measurements were carried out in the temperature range 13-300 K, in order to evaluate the energy gaps and their temperature dependences. The spectra of the optical constants n, kappa, epsilon(1) and epsilon(2) versus photon energy hv have also been presented.