The Diocese of Limburg is a Latin Church diocese of the Catholic Church in Germany. It belongs to the ecclesiastical province of Cologne, with metropolitan see being the Archdiocese of Cologne.

Limburg Cathedral (German: Limburger Dom, also known as Georgsdom after its dedication to Saint George, is located above the old town of Limburg in Hesse, Germany. It is the cathedral of the Catholic Diocese of Limburg. Its high location on a rock above the river Lahn provides its visibility from far away. It is the result of an Early Gothic modernization of an originally Early Romanesque building and therefore shows a Romanesque-Gothic transitional style.