Amir Chakhmaq is the name of an ancient square in Yazd that includes several old structures such as a bazaar, mosque, water storage, and a mausoleum that are all listed as National Heritage Sites.

The Amir Chakhmaq Mosque, also known as Dahouk mosque , is a historical mosque from the Timurid era in Yazd, in Iran. It was built on orders of Jalal ed-Din Amir Chakhmaq Shami, who was the governor of Yazd and a general of Shahrukh Mirza. The mosque was completed in 1438. From the viewpoint of aesthetics, dimension and importance, it is one of the most outstanding buildings in Yazd.

The mosque is located south of Amir Chakhmaq Complex. The mosque is noted for its symmetrical sunken alcoves. There are inscriptions made of mosaic in Thuluth script of Mohammad al-Hakim on the eastern entrance. During the era of Fath Ali Shah, Hossein Attar added a part to its shabestan and restored some parts of the mosque.

The prominent structure has a three-storey elaborate façade of symmetrical sunken arched alcoves. It is the largest structure in Iran.  In the centre are two very tall minarets. The spiral staircase in one of the two minarets is said to create a feeling of claustrophobia, while it provides views of Yazd. At night, the building is lit up with orange lighting in the alcoves which makes it a spectacle.