Al-Ahsa, Al-Hasa, or Hadjar (Arabic: الأحساء al-Aḥsāʾ, locally al-Ahasā) is a traditional oasis historical region in eastern Saudi Arabia whose name is used by the Al-Ahsa Governorate, which makes up much of that country's Eastern Province. The oasis is located about 60 km inland from the coast of the Persian Gulf.