The Battle of Sarantaporo, also variously transliterated as Sarantaporon or Sarandaporon (Greek: Μάχη του Σαρανταπόρου), took place on October 9–10 (O.S.), 1912. It was the first major battle fought between Greek and Ottoman forces during the initial stages of the First Balkan War, and revolved around the Sarandaporo pass, which connected Thessaly with central Macedonia.