Qalaat al-Marqab is a castle near Baniyas Syria, on the Mediterranean coast. Though the site was home to an Arab fortification from 1062 CE, Qalaat al-Marqab is known today as a Crusader Castle, which was captured by the Byzantine Empire in 1104 CE.
The castle continued to exchange hands throughout the Crusades, eventually ending as a district centre of the Mamluk province of Tripoli. The castle is known from multiple textual sources, including writings of the traveller Ibn Battuta.
Architecturally, the castle conforms to traditional design for its time. It is a Spur Castle, with elements of a concentric castle, and is similar in many ways to Krak des Chevaliers.