The Archdiocese of Sens and Auxerre (Latin: Archidioecesis Senonensis et Antissiodorensis; French: Archidiocèse de Sens et Auxerre) is a Latin archdiocese of the Catholic Church in France. The archdiocese comprises the department of Yonne, which is in the region of Burgundy.
Established in sub-apostolic times, according to late local legends, the diocese, as metropolis of the province of Quarta Lugdunensis, achieved ecclesiastical metropolitical status in the 7th century. For a time, the archbishop of Sens held the title "primate of the Gauls and Germania". The title was transferred to Lyon in the latter part of the 11th century.
