The analysis of optical spectra of AgInSe2 and AgInTe2 thin films has been discussed. These ternary chalcopyrite compounds show an allowed direct transition near the fundamental absorption edge (E-g1) in addition to a transition originating from crystal-field split levels (E-g2) The calculated band tail in the first region (E-e1) and (E-e2) in the second region revealed that the crystallinity of AgInTe2 was higher than that of the AgInSe2 composition. The extinction coefficient (k) and refractive index (n) were also calculated for both compositions.