Eczacılık Fakültesi, Farmasötik Botanik AD, İstanbul, Türkiye DOI : 10.12991/201115441 In this study, the folk medicinal plants of Silivri (İstanbul) were researched. During the field works, the information were obtained from experienced adults and patients by personal interviews and the specimens of the plants were collected. The plant specimens are kept in the Herbarium of the Faculty of Pharmacy, Marmara University. As a result of identification of the plant specimens, 35 species used as a traditional folk medicine in Silivri, have been determined. Among them 25 species are wild and 10 species are cultivated plants. These plants and their local usage in treatment are presented in a table in the text. The plants are mostly used for stomach ailments, cough, hemorrhoid, rheumatism, cold, eczema and diabetes. Keywords : Folk medicine, medicinal plants, Silivri, İstanbul, Turkey