The Greek Orthodox Cathedral of Saint Sophia is a heritage-listed Greek school, Greek Orthodox cathedral and Greek venue for social activities located at 302-304 South Dowling Street, Paddington, City of Sydney, New South Wales, Australia. It was designed by Walter Leslie and built from 1926 to 1930 by W. Robins. It is also known as Saint Sophia Cathedral, the Greek Orthodox Cathedral of Saint Sophia (Agia Sophia), the Cathedral of Holy Wisdom and the Cathedral of God's Wisdom. The property is owned by Greek Orthodox Community of NSW. It was added to the New South Wales State Heritage Register on 18 March 2016.