The Chehel Dokhtaran mausoleum (Persian: (آرامگاه) چهل‌دختران) is a historical structure in Kashan, Iran. It is located to the west of Emamzadeh Soltan Mir Ahmad. The mausoleum was built in the Ilkhanid era. Its high simple unadorned dome is the hallmark of the architecture in the Ilkhanid era.

Chehel Dokhtaran means forty girls in the Persian language, but it is unknown for what reason this name has been given to the building. Some people believe that this building had been a mosque and school special to women just like Chehel Dokhtaran minaret and it was built like the minaret in 1112.

• List of the historical structures in the Isfahan province