Arsuf (Hebrew: אַרְסוּף , ארשוף , "Arshooph", "Arsoof" ; Arabic: أرْسُوف‎, "ʾArsūf"), also known as Arsur or Apollonia (Ancient Greek Απολλωνία), was an ancient city and fortress located in Israel, about 15 kilometres north of modern Tel Aviv, on a cliff above the Mediterranean Sea, built by the Canaanites and mentioned in the epigraphs of Teghlat Flacer.