The Jameh Mosque of Nain (Persian: مسجد جامع نایین, romanized: Masjed-e Jâmeʻ-e Nâʼin) is the congregational mosque (jameh mosque) of Nain, Isfahan province, Iran.

[1] Although the mosque is one of the oldest in Iran, it is still in use and is protected by Iran's Cultural Heritage Organization.

The mosque, dated to the 9th century, is one of the oldest in Iran, Like the Tarikhaneh of Damghan and the Jameh Mosque of Isfahan, this mosque is "Khorasani" in its architectural style (sabk).

Media related to Jameh Mosque of Nain at Wikimedia Commons

This article about a mosque or other Islamic place of worship in Iran is a stub.