The Kellys Bush Park is a heritage-listed bushland, partly on the former site of smelting works, at Nelson Parade, Hunters Hill in the Municipality of Hunter's Hill local government area of New South Wales, Australia. It is also known as Weil Park and The Smelting Company. The property is owned by Department of Planning and Environment, a department of the Government of New South Wales. It was added to the New South Wales State Heritage Register on 2 April 1999.