Öz The aim of this study was to research the bat species and their distribution in the Ankara province from June 1974 to May 1976. This study is hased on a total of 265 specimens and related field notes. Ali external meas- urements and weights were taken in the flesh. The specimens were prepared in the field in con- ventional museum type. Notes on habitat, colour and distribution of each species were recorded. The specimens were divided into three age groups: infant, juvenile and adult. The tables present only the meas- urement of the adult groups. The secondary sexual differences between adult males and females were examined statistically. Statistical comparisons were carried out only adequate specimens. Keys were also prepared. on the samples with Our specimens inciude Rhinoîophusferrumequinum, Rhinolophus hipposideros, Rhinolophus mehelyif Myotis myotis, Myotis biythi, Pipistrellus pipistrellus^ Pipistrellus savii, Eptesicus serotinus and Miniopterus schreibersi. This is the first record of Pipistrellus savii (or Central Anatolia. However, its first record for Anatolia was from Southern Turkey. From the above species only Rhinolophus ferrumequinum and Pipistrellus pipistrellus were recorded earlier and ali others are new records for the Ankara province.