The Cathedral of Tortona, also known as Cattedrale di Tortona, is a Roman Catholic cathedral located in the city of Tortona, Italy. It serves as the seat of the Bishop of Tortona and is dedicated to Saint Lawrence. The cathedral features a blend of architectural styles, primarily Romanesque and Gothic, reflecting its long history. Construction of the cathedral began in the 11th century, with significant renovations and expansions occurring over the centuries. Notable elements include its impressive façade, beautiful frescoes, and a striking bell tower. The cathedral is an important religious and cultural landmark in the region.