Auxerre Cathedral is a Roman Catholic church, dedicated to Saint Stephen, located in Auxerre, Burgundy, France. It was constructed between the 13th and 16th centuries, on the site of a Romanesque cathedral from the 11th century, whose crypt is found underneath the cathedral. It is known for 11th century Carolingian frescoes found in the crypt, and for its large stained glass windows. Since 1823 it has been the seat of a diocese united with that of Sens Cathedral.

Auxerre is the capital (prefecture) of the Yonne department and the fourth-largest city in the Burgundy historical region southeast of Paris. Auxerre's population today is about 35,000; the urban area comprises roughly 113,000 inhabitants. Residents of Auxerre are referred to as Auxerrois.