St Mark's Church is an active Anglican church in Darling Point, a suburb of Sydney, New South Wales, Australia. It is part of a significant local heritage group that includes the church, rectory, and adjacent cottage. The group forms part of a large collection of important to late 19th century buildings of considerable townscape, historic and cultural significance, including the former St Mark's Crescent School, St Mark's Cottage and Bishopscourt, formerly Greenoaks.