Qasr Usaykhim is a ruined fort located northeast of the town of Azraq in Zarqa Governorate, Jordan. It was built by Romans in the 3rd century AD. The fort is located on the top of a hill that controlled the ancient trade routes between the Hejaz and the Levant. It is a 10-room building that opens onto a square yard. The fort was used later during the Byzantine period and then the Ayyubid period as a rest stop for pilgrims.