The Sydney Cenotaph is a heritage-listed monument located in Martin Place, in Sydney, New South Wales, Australia. It was designed by Bertram Mackennal and built from 1927 to 1929 by Dorman Long & Co. It is also known as Martin Place Memorial and The Cenotaph. It is one of the oldest World War I monuments in central Sydney. It was added to the New South Wales State Heritage Register on 11 November 2009.