A distributional checklist of total 382 marine and coastal brackish water ostracod (Crustacea) species from Turkey (the Mediterranean Sea, the Aegean Sea, the Black Sea, the Sea of Marmara, the Dardanelles Strait, and the Bosphorus Strait) are listed in this updated checklist. This checklist was generated from all studies (mainly based on published data) which were carried out in Turkish territorial marine and coastal brackish waters between the years of 1989-2014.