This study was carried out with excursions which species belonging to the family Staphylinidae (Coleoptera) were collected in May-July, 2003, May-August, 2008 and April-June, 2009 in Ankara province. As a result of the study, 28 species belonging to 15 genera and five subfamilies (Aleocharinae, Omaliinae, Oxytelinae, Tachyporinae, Paederinae) were identified. Sampling localities, distributions of the species in Turkey and World are given. Specimen numbers, vertical distributions, collecting months and habitats, distributions of species in other geographical regions of Turkey and Zoogeographic regions are shown. According to present literature 18 of all detected species are new records for Ankara and Mycetoporus baudueri Mulsant & Rey, 1875 is a new record for Turkey.