An-Nabk District (Arabic: منطقة النبك) is a district (mantiqah) of the Rif Dimashq Governorate in Syria. At the 2004 officical census, the district had a population of 80,001. The centre of the district is the city of An-Nabk.
The area of the district is also known as Qalamoun, Qalamun, Qalamūn, Kalamon and Kalamoun.
The district of Al-Nabk is divided into three sub-districts or Nāḥiyas (population according to 2004 official census):