The tribe Orthosiini Guenée, 1837, one of the six tribes of Hadeninae subfamily is represented by 17 genera worldwide. Of those, three genera including Orthosia Ochsenheimer, 1816, Perigrapha Lederer, 1857 and Egira Duponchel, 1845 have recorded in Iran. Here, we present a Catalogue of Orthosiini of Iran including 15 species of this tribe with their provincial distribution in Iran. Identification keys for the Iranian species are provided as well. Perigrapha cilissa Püngeler, 1917 is recorded for the first time from Iran. The external and genital characteristics of the newly recorded species are given, beside the illustrations of the adults and their genitalia.