Oristano Cathedral (Italian: Duomo di Oristano; Cattedrale di Santa Maria Assunta), dedicated to the Assumption of the Virgin Mary, is the Roman Catholic cathedral of Oristano, Sardinia, Italy. It is the seat of the Archbishop of Oristano. It is built in the Baroque style, and is located in the historical centre of the city. It was initially constructed in 1195.[1]