The Fortress of Al-Ukhaidir (Arabic: حصن الأخيضر) or Abbasid palace of Ukhaider is located roughly 50 km south of Karbala, Iraq.

Excavations at Ukhaidir were conducted in the early 20th century by Gertrude Bell, who wrote the first major report on the remains.

[4] The fortress exemplifies Abbasid architecture in Iraq by demonstrating the "despotic and the pleasure-loving character of the dynasty" in its grand size but cramped living quarters.

[5] The current name could be related to Isma'il ibn Yusuf al-Ukhaidhir from Banu Ukhaidhir who launched a rebellion against the Abbasid, then later he became the governor of Kufa with the support of Qarmatians.

[6] This site was added to the UNESCO World Heritage Tentative List on July 7, 2000, in the Cultural category.