Youssef Dey Mosque, also known as Al B'chamqiya, is a mosque in Tunis, Tunisia, located in Medina area of the city. It is an official Historical Monument.
It operated primarily as public speaking venue before becoming a real mosque by Youssef Dey in 1631. At the time it was the 11th mosque to be built in the capital. In the late nineteenth century it underwent extensive resoration, ordered by Ali Bey. A decree in 1926 saw the mosque become an annex of the University of Ez-Zitouna.[1]