The Mirdasid dynasty was a dynasty that controlled the Amirate of Aleppo more or less continuously from 1024 until 1080.

The Mirdasids were members of the Banu Kilabi, an Arab tribe that had been present in northern Syria for several centuries. Like the other Arabs of the region, the Mirdasids were Shi'a Muslims, although as a result of the expansion of the Seljuk Turks into the area they were constrained to convert to Sunnism.

Unlike other Arab tribes of Greater Syria that managed to establish their autonomy or independence in the late 10th/early 11th centuries, the Mirdasids focused their energies on urban development. As a result, Aleppo prospered during their reign. The Mirdasids demonstrated a high degree of tolerance to Christians, favoring Christian merchants in their territories and employing several as viziers. This policy, no doubt influenced by comparatively good relations with the Christian Byzantine Empire, often upset the Muslim population.

The early history of the Mirdasid dynasty is characterized by constant pressure from both the Byzantines and the Fatimids of Egypt. By mixing diplomacy (the Mirdasids were vassals of both the Byzantines and Fatimids several times) and military force, the Mirdasids were able to survive against these two powers.