Mirepoix Cathedral is a Roman Catholic church located in the southwestern town of Mirepoix, Ariège, France.
The foundation stone was laid by Jean de Lévis on the 6th May 1298. Construction continued, with interruptions, over the next six centuries. The cathedral was restored in 1858 and 1859 by Prosper Mérimée, and Eugène Viollet-le-Duc.
The cathedral has the second widest Gothic arch in Europe, after that of the Girona Cathedral in Catalonia, Spain.
Coordinates 43°5'15.797" N 1°52'27.404" E