The Diocese of Viborg is a diocese within the Church of Denmark, covering the western part of central Jutland. Viborg Cathedral in the city of Viborg serves as the seat of the diocese's bishop. The diocese has the highest ratio of church members in Denmark, about 85%.

Historically, it was a Lutheran church diocese in the mid- to late-16th century, when it became vacant, but was then re-established c. 1618, with Olav Elimaeus as its Bishop.