Three new species from the Marmara region of Turkey are described: Hilara sakaryensis sp. nov. (Hilara abdominalis-group), Hilara truva sp. no (Hilara canescens-group), and Hilara balikesirensis sp. nov. (Hilara intermedia-group). Males and females are described and compared with related species, and male genitalia and forelegs are illustrated. The systematic position of the new species within the species groups is discussed, and a key to the Turkish species of Hilara Meigen is given.