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The nuclear data for neutron induced reactions up to 20.0 MeV is used in many different fields such as nuclear physics, astrophysics, and medicine. In this study, cross-section calculations for (n,2n), (n,p) and (n,α) reactions of iridium isotopes (191,193Ir) have been calculated using different level density models up to 20,0 MeV. The ALICE-ASH, EMPIRE-3.2 and TALYS-1.95 nuclear codes were used in model calculations. The Fermi Gas Model in ALICE-ASH, The Generalized Superfluid Level Density Model in EMPIRE-3.2 and the Constant Temperature Fermi Gas Level Density Model in TALYS-1.95 code have been selected. The results have been discussed and compared with the experimental data found in literature and with different evaluated nuclear data (ENDFB-VIII.0, JEFF-3.3 and JENDL-2017). It is believed that the results will make important contributions to the development of future cross-section studies. [ABSTRACT FROM AUTHOR]