This study focuses on the family Drosophilidae in West Azerbaijan, northwest Iran, where 11 species across four genera were recorded. Notably, one species, Scaptomyza adusta (Loew, 1862), is recorded in Iran for the first time. As is well known, flies belonging to the Drosophilidae family are significant agricultural pests in Iran. The results emphasize the significance of more research in understudied areas and greatly advance our understanding of drosophilidae biodiversity worldwide. The Drosophilidae family has more than four thousand species described, which in 2006, the known world fauna of Drosophilidae included 3950 taxa of the species group in 73 genera (Brake and Bächli, 2008), its actual size being estimated in 4500 species (Plotnikov, 2012). In this study, the species Drosophila busckii, Drosophila hydei, Drosophila immigrans, Drosophila melanogaster, Drosophila phalerata, Drosophila simulans, Lordiphosa andalusiaca, Scaptomyza flava, Scaptomyza pallida, Scaptomyza adusta were examined.This paper provides a comprehensive list and a photo of the newly recorded species. Key Words: Drosophilidae, Iran, West Azerbaijan, new record.