Osiana
Osiana a town in the west of Cappadocia, between the river Halys and lake Tatta, on the road from Ancyra to Caesarea (It. Ant. p. 206). Its site must probably be looked for in the district of Jurkup or Urgub.
From William Smith (ed.), Dictionary of Greek and Roman Geography. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.