Al-Bab Subdistrict, also called Nahiya Markaz al-Bab (Arabic: ناحية مركز الباب), is a subdistrict of al-Bab District in northern Aleppo Governorate, northwestern Syria.

Administrative centre is al-Bab.

At the 2004 census, the subdistrict had a population of 112,219.

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