Katolika Aosta ( Italian  ; French: Cathédrale d'Aoste; Cathédrale Notre-Dame-de-l'Assomption et Saint-Jean-le-Baptiste ) Ne Roman Katolika babban coci a Aosta, a arewa maso yammacin Italiya, gina a cikin karni na hudu (4). Ita ce bishiyar bishop na Diocese na Aosta . A cikin karni na 11 tsarin Palaeo-Christian ya maye gurbinsa da sabon salo, wanda aka sadaukar domin zato na Budurwa Maryamu da kuma Saint John Baptist . An sake fasalin gine-ginen babban coci a lokacin ƙarni na 15 da 16. Façade na yanzu, a cikin salon Neoclassical, an gina shi tsakanin shekarar 1846 da sekarar 1848. Tsarin sauran daga Romanesque lokaci ne biyu Agogon-hasumiyoyin da crypt, da kuma ma sauran wani ɓangare na wani Ottonian fresco sake zagayowar a kan coci rufi.