Major General Sir Robert Joseph Henry Risson, was an Australian engineer, soldier, and tramway administrator. After university he worked for the Brisbane Tramways Trust, later under the auspice of Brisbane City Council, as an engineer and administrator. During World War II Risson served in the Middle East and New Guinea. Following the war he returned to the Brisbane tramways, and became chairman of the Melbourne and Metropolitan Tramways Board from 1949 to 1970. In this position he defended trams, and is considered a major factor in the survival of Melbourne's tram system. Risson had ties with a myriad of professional and community organisations, including the Freemasons, where he served as Grand Master of the United Grand Lodge of Victoria in the mid-1970s. Risson was decorated for his service, holding the rank of major general and being knighted.

The Melbourne & Metropolitan Tramways Board (MMTB) was a government-owned authority that was responsible for the tram network in Melbourne, Australia between 1919 and 1983, when it was merged into the Metropolitan Transit Authority. It had been formed by the merger of a number of smaller tramway trusts and companies that operated throughout the city.