Sylvania is a suburb in southern Sydney, New South Wales, Australia, 22 kilometres south of the Sydney central business district in the Sutherland Shire. It is well known for its large waterfront properties and restaurants. Sylvania is mostly residential but also contains areas of native bushland and some commercial developments on the Princes Highway and Port Hacking Road. Sylvania Heights is a locality in the western part of the suburb. Sylvania Waters and Kangaroo Point share the same postcode (2224).