St Patrick's Seminary, Manly is a heritage-listed former residence of the Archbishop of Sydney and Roman Catholic Church seminary at 151 Darley Road, Manly, Northern Beaches Council, New South Wales, Australia. The property was also known as St Patrick's Estate , St. Patricks Estate, St. Patrick's Seminary or College, Cardinal's Palace, Archbishop's Residence, St Pats, St Patricks and Saint Paul's Catholic College. It was designed by Sheerin & Hennessy, Hennessy & Hennessy, Scott Green & Scott and Sydney G Hirst & Kennedy and built from 1885 to 1889 by William Farley (Residence/Palace), W. H. Jennings (College/Seminary). The property is owned by the Catholic Archdiocese of Sydney. The property was added to the New South Wales State Heritage Register on 21 January 2011.