Scottish minister associated with the origins of the Catholic Apostolic Church (q.v.). In 1822 he became minister of the Caledonian chapel in Hatton Garden, London. He turned to millenarian ideas and came into contact with the circle of H. Drummond. In 1830 the London Presbytery removed him from its fellowship; after disturbances of a revivalist character at the church in Regent Square, where Irving was now minister, he was expelled in 1832. His supporters moved to a building in Newman Street which, until 1853, was the centre of the Catholic Apostolic Church in London. Irving was deprived of his orders by the Church of Scotland, but ordained to the episcopate in the Catholic Apostolic Church in 1833.