The Trinity is not uniformly held across Quaker traditions. Evangelical Quakers, particularly those influenced by the renewal movements of the 19th and 20th centuries, affirm classical Trinitarian theology. Liberal and progressive Quakers, especially in Britain and other parts of Europe, hold more diverse positions, some treating the Trinity as metaphorical or focusing instead on the unity of divine experience.

The concept of the Inner Light—which George Fox described as the Light of Christ in every person—sometimes bridges these positions. Evangelical Quakers often identify this Light with the Holy Spirit operating within human souls, while liberal Quakers sometimes understand it as a universal spiritual presence not necessarily identified with Christian categories. This diversity reflects Quakerism's historical emphasis on direct spiritual experience over doctrinal uniformity.