Three species of the genus Phyllodistomum Braun, 1899 are identified infecting marine teleost fishes from Sinop coast (Southern Black Sea, Turkey). They were Phyllodistomum acceptum from Parablennius sanguinolentus, Phyllodistomum crenilabri from Symphodus tinca and Symphodus ocellatus, Phyllodistomum sp. from Gobius cruentatus. Standard parasitological investigation methods were applied and morphological diagnostic features of these species were studied in detail using both light microscope (LM) and scanning electron microscope (SEM). The measurement data of all morphological diagnostics was provided and photomicrographs of each part of these parasites were presented. Infection prevalence and intensity values as well as morphometric data for each parasite species were provided. This research is the first on presence of Phyllodistomum sp. in Gobius crutentatus. In addition, this study is the first time in which the tegumental surface of P. acceptum and P. crenilabri was examined by SEM.