The Chinguetti Mosque (Arabic: مسجد شنقيط, romanized: Masjid Shinqīṭ), also known as the Chinguetti Great Mosque, is a Sunni Islam mosque in Chinguetti, Adrar Region, Mauritania. It was an ancient center of worship created by the founders of the oasis city of Chinguetti in the Adrar region of Mauritania in the thirteenth or fourteenth century. The minaret of this ancient structure is claimed to be the second oldest in continuous use anywhere in the Muslim world.

The mosque is located within the Ancient Ksour of Ouadane, Chinguetti, Tichitt and Oualata, a 54.7 ha (135-acre) UNESCO World Heritage Site, listed in 1996.

The mosque is constructed of split stone and clay with a roof of palm beams on stone piers. Architecturally, the structure features a prayer room with four aisles as well as a double-niched symbolic door, or mihrab pointing towards Mecca and an open courtyard. The twin mihrab and minbar niches are built into the qibla wall, which is typical of the mosques of the region.

Among its most distinctive characteristics are its spare, unmortared, split stone masonry, its square minaret tower, and its conscious lack of adornment, keeping with the strict Malikite beliefs of the city's founders. The mosque and its minaret is popularly considered the national emblem of the Islamic Republic of Mauritania.

The mosque was restored through a UNESCO effort, but it, along with the city itself, continues to be threatened by intense desertification.

• Islam in Mauritania
• List of mosques in Mauritania

Media related to Chinguetti Mosque at Wikimedia Commons

• "Chinguetti Mosque". Archnet. Archived from the original on May 14, 2005.
• "Chinguetti Mosque". World Monuments Watch List of 100 Most Endangered Sites. World Monuments Fund. 2008.
• "Chinguetti". Palin's Travels.