This paper deals with the faunistic surveys on Eulophidae (Hymenoptera, Chalcidoidea) of northwestern Iran. In total 17 species from 12 genera and 3 subfamilies (Entedoninae, Eulophinae, Tetrastichinae) were collected and identified. Chrysocharis pubens Delucchi, Pediobius eubius (Walker), Dicladocerus westwoodi Westwood, Miotropis unipuncta (Nees), Sympiesis viridula (Thomson), Aprostocetus pygmaeus (Zetterstedt) and Neotrichoporoides viridimaculatus (Fullaway) are new records for the fauna of Iran.