Peter-Ben Smit holds professorships in Old Catholic theology at the Universities of Bern and Utrecht and in contextual biblical interpretation at Vrije Universiteit (Amsterdam) and is a research associate at the Faculty of Theology, University of Pretoria. His publications include: Old Catholic and Philippine Independent Ecclesiologies in History. The Catholic Church in Every Place (Brill, 2011) Tradition in Dialogue. The Concept of Tradition in International Anglican Bilateral Dialogues (VU University Press, 2012).

Old Catholic theology is the theology that is characteristic of the Old Catholic Churches of the Union of Utrecht. This contribution outlines the main characteristics of and influences on Old Catholic theology, and outlines the extant ecumenical relationships of the Old Catholic Churches.