Abstract: As a consequence of the examination of the materials that were collected from 58 different localities between the years 1987-1998 in Turkish Thrace region (Edirne, Kirklareli, Tekirdag), total 28 Copepoda species were determined. The first records of the Thrace region are Paracyclops affinis, Paracyclops fimbriatus, Cyclops scutifer, Cyclops kolensis, Megacyclops (Acanthocyclops) gigas.