Castlemaine Brewery is a heritage-listed former brewery and museum and now serviced apartments at 787 Hunter Street, Newcastle West, City of Newcastle, New South Wales, Australia. It was designed by Oswald Lewis and built from 1874 to 1876 by Laing and Wylie under supervising architect G. H. Cox. It was later used as the Pink Elephant Markets and as the Newcastle Museum before being redeveloped as the Quest Newcastle West serviced apartments. It was added to the New South Wales State Heritage Register on 2 April 1999.