A new neutron-rich isotope ¹⁹⁷Os was produced in the ¹⁹⁸Pt(n, 2p) reaction by irradiating natural Pt targets with 14 MeV neutrons. The γ(X) singles spectrum and coincidence spectrum measurements were performed using two HPGe γ-ray detectors. Ten unknown γ-rays at 41.2, 50.7, 196.8, 199.6, 223.9, 233.1, 250.2, 342.1, 403.6, and 460.4 keV attributed to the decay of ¹⁹⁷Os were observed in the experiments. The half-life of ¹⁹⁷Os was found to be (2.8 ± 0.6) min. A partial decay scheme of ¹⁹⁷Os was proposed on the basis of decay and coincidence relations. The half-life was compared with the values expected by different theoretical models.