Fann Mountains (, ; also known as the Fanns) are part of the western Pamir-Alay mountain system and are primarily located in Tajikistan's Sughd Province between the Zarafshan Range to the north and the Gissar Range to the south. In the east-west direction they extend from Fandarya River to Archimaydan River, and the cluster of Marguzor lakes known as the 7 lakes west of Archimaydan is also included in the Fanns.