This study was carried out in various localities in five provinces of the Turkish Thrace, between the years 1992 and 2003. A total of 101 species from six heteropteran families (Pentatomidae, Scutelleridae, Thyreocoridae, Cydnidae, Acanthosomatidae and Plataspidae) were determined, 22 of the species are new records of the Pentatomoidea for the Turkish Thrace. Of these, three species (Thyreocoris fulvipennis, Neottiglossa lineolata, Podops inuncta) are first records for Turkey. It seems that Podops is a new genus record for Turkey. Picromerus brachypterus, which has previously been recorded from Anatolia (Turkey), is considered a new record for Europe.