Lindesay is a heritage-listed former residence and now offices, functions and house museum located at 1a Carthona Avenue, Darling Point, Municipality of Woollahra, New South Wales, Australia. It was designed by James Chadley and Edward Hallen (attributed), Francis Clarke and Robertson & Marks (service wing) and built from 1834 to 1836. The property is owned by the National Trust of Australia (NSW). It was added to the New South Wales State Heritage Register on 2 April 1999. Lindesay was the first major house to be constructed on Darling Point and is aesthetically important as the earliest example of the domestic Gothic Revival style in Sydney. Some of its residents were colourful figures who played an important part in the history of New South Wales.