Al Ahsa, El Hasa, or Hadjar ( , locally ; ) is a traditional oasis 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.

Al Ahsa, El Hasa, or Hadjar ( , locally ; ) is a traditional oasis 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.