The Mosque of the Andalusians or Al-Andalusiyyin Mosque (Arabic: جامع الأندلسيين, romanized: Jama' al-Andalusiyyin; Berber languages: ⵎⴻⵣⴳⵉⴷⴰ ⴰⵏⴷⴰⵍⵓⵙ), sometimes also called the Andalusian Mosque, is a major historic mosque in Fes el Bali, the old medina quarter of Fez, Morocco. The mosque was founded in 859–860, making it one of the oldest mosques in Morocco. It is located at the heart of a district which was historically associated with Andalusi immigrants, from which it takes its name. It has been renovated and expanded several times since then. Today, it is one of the relatively few remaining Idrisid-era establishments and one of the main landmarks of the city.