In this study, 473 adults from the family Coreidae (Hemiptera: Heteroptera) were collected from 48 different localities in Turkey. Additional material collected by Seidenstücker, Well schmied, Pfeiffer, Kulzer, Demelt and Schacht preserved in the Zoologische Staatssammlung München was examined. Thirty-one species in 17 genera were recorded. Of those, 30 are new records for specific areas of Turkey: Ceraleptus obtusus (Brullé, 1839) and Coriomeris hirticornis (Fabricius, 1794) are new records for the fauna of Turkish Thrace. Centrocoris degener (Puton, 1874), Ceraleptus sartus Kiritshenko, 1912, Coriomeris alpinus (Horváth, 1895), Coriomeris armeniacus Tshernova, 1978, Coriomeris validicornis Jakovlev, 1904, Gonocerus insidiator (Fabricius, 1787), Plinachtus imitator (Reuter, 1891), Prionotylus brevicornis (Mulsant & Rey, 1852), Spathocera dalmanii (Schilling, 1829), Spathocera laticornis (Schilling, 1829) and Leptoglossus occidentalis Heidemann, 1910 are rare species in Turkey. A checklist of Coreidae from Turkey is given to summarize the present state of knowledge.